Jnited States
Environmental Protection
Agency
Office of Water
Planning and Standard
Washington DC 20460
December 1979
Water
Bacteria	810R79103
Water Quality Standards
Criteria Digest
A Compilation
of State/Federal Criteria

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ENVIRONMENTAL PROTECTION AGENCY
WATER QUALITY STANDARDS
CRITERIA DIGEST - CORRECTIONS
In December 1979, EPA published four documents containing the
summaries of State Water Quality Standards. In those four documents
a number of errors appeared which need correction. These corrections
are listed below.
ACIDITY-ALKALINITY (pH)
1.	Idaho. Page 7: add as the first phrase the following general
statement - Values for all waters are to be within the range of
6.5 - 9.0.
2.	Mississippi. Page 11: delete the criteria and uses for
agriculture, industrial, and navigation.
BACTERIA
1.	Alabama. Page 1: for F & WL, change the geometric mean of
100/100 to 1,000/100.
2.	Florida. Page 9: for PWS change 1,000/100 fecal col 1forms to
1,000/100 total fecal col 1 forms.
3.	Nevada. Page 19: (a) second paragraph, change intrastate to
interstate, (b) under the more stringent criteria, change
interstate to intrastate and add Class B with Class A.
4.	Tennessee. Page 29: for PWS, change total to fecal, and for F &
WL replace "no criteria" with "same as Class 1."
5.	Utah. Page 31: Continues as:
Utah (cont'd) Class C (PWS after treatment; recreation, excepting swimming
unless natural purification action results in quality
consistent with class "CR" standard and swimming is
specifically approved by State board of health): Monthly
arithmetic mean total coliforms not to exceed 5,000/100,
except 20% of samples may exceed this if no more than 5%
exceed 20,000/100, and monthly arithmetic mean coliforms
shall not exceed 2,000/100.
Class CR (swimming): Monthly arithmetic mean col iforms not
exceed 1,000/100; no more than 20% exceed this and no more
than 5% exceed 4,000/100; and monthly arithmetic mean fecal
coliforms exceed 200/100, provided no more than 10% exceed
400/100.

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Class D (limited irrigation, not including lawns, rec.
areas, dairy pastures, root crops or low growing crops for
human consumption): Monthly arithmetic mean coliforms not
exceed 5,000/100, except 20% of samples may exceed this if
no more than 5% exceed 20,000/100.
Vermont	Class A (PWS with disinfection): Total coliforms not exceed
100/100. Fecal coliform: none attributable to discharge of
domestic or industrial wastes.
Class B (PWS with treatment; bathing): Total coliforms not
exceed 500/100. Fecal coliform not exceed 200/100.
Class C (secondary contact recreation): Fecal coliforms not
to exceed 1,000/100.
Virginia	In all surface waters, except those areas where public or
leased private shellfish beds are present, the fecal
coliform bacteria shall not exceed a log mean of 200/100 ml
with not more than 10% of total samples during any 30-dcty
period exceeding 400/100 ml. Evaluation should be
determined by either multi-tube fermentation for marine
waters or membrane filtration method for freshwaters and
should be based upon not less than 10% of samples taken over
not more than a 30-day period.
Shellfish - In all open ocean or estuarine waters capable of
propagating shellfish or in specific areas where public or
leased private shellfish beds are present, and including
those waters on which condemnation or restricted
classifications are established by State Department of
Health, the following standard will aply: the median fecal
coliform value for a sampling station shall not exceed an
MPN of 14/100 of samples and not more than 10% of the
samples shall exceed 43 for a 5-tube, 3-dilution test or 49
for a 3-tube, 3-dilution test.
DISSOLVED OXYGEN
1. Idaho. Page 8: substitute the given criteria with the
following:
Cold Water Fishery - exceed 6 mg/1 at all times, minimum daily
average will be 7 mg/1.
Warm Water Fishery - exceed 5 mg/1 at all times, minimum daily
average will be 6 mg/1.
Miscellaneous - Salmonid Spawning; exceed 90% of saturation or 6
mg/1, whichever is greater.

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2.	Mississippi. Page 13: Substitute the given criteria with the
following:
Dissolved oxygen concentrations shall be maintained at a daily
average of not less than 5. mg/1 with an instantaneous nimimum of
not less than 4.0 mg/1 in streams; shall be maintained at a daily
average of not less than 5.0 mg/1 with an instantaneous minimum
of not less than 4.0 mg/1 in estuaries and in the tidally-
affected portions of streams; and shall be maintained at a daily
average of not less than 5.0 mg/1 with an instantaneous minimum of
not less than 4.0 mg/1 in the epilimnion (i.e., the surface layer of
lakes and impounments that are thermally stratified, or 5 feet frcm
the water's surface (mid-depth if the lake or impoundment is less
than 10 feet deep at the point of sampling) for lakes, and
impoundments that are not stratified.
Epilimnion samples may be collected at the approximate mid-point of
that zone (i.e., the mid point of the distance or if the epilimnion
is more than 5 feet in depth, then at 5 feet from the water's
surface.
(Applicable to all classes).
%
3.	Oregon. Page 17: Replace the Cold Water Fishery criteria of 75%
with 90% and delete the phrase "or 5-7 mg/l.M
HISSOLVED SOLIDS
1.	Arizona. Page 1: Delete the phrase for no requirements. Also,
in the last sentence of paragraph change "goals" to "standards."
2.	Kentucky. Page 10: Delete the use and criteria for industrial
water supply.
3.	North Carolina. Page 16: Replace the phrase for no requirements
with Class A-II: total dissolved solids - 500 mg/1; sulfates -
250 mg/1.

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INTRODUCTION
This digest was compiled to provide general information to the public
as well as to Federal, State, and local officials. It contains
excerpts from the individual State-Federal water quality standards
establishing pollutant specific criteria for navigable surface
waters. The water quality standards program is implemented by the
U.S. Environmental Protection Agency where responsibility for
providing water quality recommendations, approving State-adopted
standards for navigable waters, evaluating adherence to the
standards, and overseeing enforcement of standards compliance, has
been mandated by Congress.
The standards program, a nationwide strategy for surface water
quality management, contains two major elements: the use (recreation,
drinking water, fish and wildlife propagation, industrial, or
agricultural) to be made of the navigable water; and criteria to
protect these uses.
Water quality criteria (numerical or narrative specifications) for
physical, chemical, temperature, and biological constituents are
stated in the July 1976 U.S. Environmental Protection Agency publi-
cation Quality Criteria for Mater (QCW), order # 055-001-01049-4,
price $3.50, available from the Government Printing Office,
Washington, D.C. The 1976 QCW, commonly referred to as the "Red
Book," is the most current compilation of scientific information used
by the Agency as a basis for assessing water quality. This
publication is subject to periodic updating and revisions in light of
new scientific and technical information.
Fecal coliform bacterial criteria, which are the subject of this
digest, are set to protect human health from diseases associated with
using contaminated water. The risk of waterborne infectious diseases
to human health is usually assessed by quantifying the concentration
of some indicator microorganism that indicates the presence of fecal
material in the water. Waterborne disease is then defined within the
bounds of a concentration of indicator above which the health risk is
unacceptably high. Bacteria of the fecal coliform group are
considered to be the primary indicators of fecal contamination since
they are usually associated in high numbers with the gastrointestinal
track and feces of warm blooded animals.
Though a scientific and direct relationship between the water quality
criteria for fecal coliform bacteria and microbial disease
transferred by direct (i.e., swirmn'ng, drinking or shellfish
consumption) or indirect (i.e., fishing, cattle watering) is lacking,
the epidemiological evidence, though inadequate in many respects,
suggests that some relationship exists. The most supportive
information for this relationship is the continued reporting of
gastrointestinal diseases in recreational shellfishing areas when
bacterial concentrations are more than the fecal coliform bacteria
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criteria given in the 1976 QCW. Therefore, fecal	col iform bacteria
are used as an indicator of the possible presence	of pathogens in
water and the risk of diseases. The criteria for	this parameter as
recommended by the 1976 QCW are:
Bathing Waters
Based on a minimum of five samples taken over a 30-day period, the
fecal col iform bacterial level should not exceed a log mean of 200
per 100 ml, nor should more than 10 percent of the total samples
taken during any 30-day period exceed 400 per 100 ml.
Shellfish Harvesting Waters
The median fecal coliform bacterial concentration should not exceed
14 MPN per 100 ml with not more than 10 percent of samples exceeding
43 MPN per 100 ml for the taking of shellfish.
Since water quality standards are revised from time to time,
following procedures set forth in the Clean Water Act, individual
entries in this digest may be superseded. This digest will be
updated periodically. Because this publication is intended for use
only as a general information reference, the reader needs to refer to
the current approved water quality standards to obtain the latest
information for special purposes and applications. These can be
obtained from the State water pollution control agencies or the EPA
Regional Offices.
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Individual State-adopted criteria follow:
KEY
PWS
Publ ic Water Supply
Rec.
Recreation
F&WL
Fish and Wild!ife
Ind.
Industrial
Agric.
Agricul tural
Mg/1
Hilligrams per Liter
SAR
Sodium Absorption Ratio
(For explanation of use classifications, see EPA publication,
General Stream Use Designations.)
Ill

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BACTERIA
Alabama PWS: 2,000/100 ml, nor exceed a maximum of 4,000/100 ml in any
sample.
Primary contact recreation: 100/100 geometric mean fecal
coliforms in coastal waters. 200/100 fecal coliforms in fresh
water. Where the geometric mean exceeds these levels, bacterial
quality is acceptable only if a second detailed sanitary survey
and evaluation discloses no significant public health risk.
F&WL: Geometric mean fecal coliforms 100/100; no sample to exceed
2,000/100.
Shellfish: National Shellfish Sanitation Program Manual of
Operations, Sanitation of Shellfish Growing Areas limits
incorporated by reference.
Alaska (PWS without treatment): Less than 20/100 fecal coliform on 5
samples in 30 days or 40/100 for 10% of samples. Groundwater
less than 1/100 (membrane filter) 3 f.c./lOO by MPN.
Class B (PWS with treatment): Monthly average less than 2,000/100
total coliform; not more than 20% of samples should exceed this
number.
Class C (Primary contact rec.): Monthly average less than 20/100
fecal coliform, with 10% of samples not to exceed 40 f.c./lOO.
Class D (F&WL): NA
CI ass E (Shell fish): NA
Class F (Agricultural): Average less than 200/100 with 10% of
samples not to exceed 400/100.
Class G (Industrial): 200/100 with 10% 400 f.c./lOO (5 samples).
American In all waters, the number of fecal coliform bacteria shall not
Samoa exceed an arithmetic mean of 100 per 100 millileters nor exceed
200/100 milliliters in more than 10% of samples during any 30-day
period. In areas where shellfish are collected, coliform
concentration shall comply with U.S. Public Health Service
Shellfish Standards, in its latest revision.
Arizona A (Domestic & Industrial & Agricultural): All waters except
primary contact recreation, geometric mean 1,000/100 fecal
coliforms, nor more than 10% of samples exceed 2,000/100.
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B (Primary contact recreation): Geometric mean 200/100 fecal
col Iforms, nor more than 10% of samples exceed 400/100.
1)	Class AA and A Waters - Based on a minimum of not less than 5
samples taken over not more than a 30-day period, the fecal
coliform content shall not exceed a log mean of 200/100 ml nor
shall more than 10% of total samples during any 30-day period
exceed 400/100 ml.
2)	Class B Waters - The fecal coliform content shall not exceed a
log mean of 1 ,000/100 ml, nor equal or exceed 2,000/100 ml in
more than 10 percent of the samples taken in any 30-day period.
In all streams, for purposes of routine monitoring and
evaluation, fewer numbers of samples collected over longer
periods may be used. When such routine monitoring indicates a
possible problem area, a sampling program following the
requirements given above for Classes AA and A waters will be
undertaken.
Cal i form" a
(1 A) Klamath River Basin
(IB) North Coastal Basin
The bacteriological quality of waters of the north coastal region shall not
be degraded beyond natural background levels. In no case shall coliform
concentrations in waters of the north coastal region exceed the following:
In waters designated for contact recreation (REC 1), the median fecal
coliform concentration based on a minimum of not less than 5 samples for
any 30-day period shall not exceed 50/100 ml, nor shall more than 10% of
total samples during any 30-day period exceed 400/100 ml.
At all areas where shellfish may be harvested for human consumption
(SHELL), the median total coliform concentration throughout the water
column for any 30-day period shall not exceed 70/100 ml nor shall more
than 10% of the samples collected during any 30-day period exceed
230/100 ml for a 5-tube decimal dilution test or 330/100 ml when a
3-tube decimal dilution test is uses.
(2) Basin
In tidal waters designated for contact recreation (REC-1), the total
coliform concentration, based on a minimum of not less than 5 consecutive
samples, shall not exceed a median value of 240/100 ml, nor shall any sample
exceed a total coliform concentration of 10,000/100 ml. In addition, the
fecal coliform concentration, based on a minimum of 5 consecutive samples,
shall riot exceed a median value of 50/100 ml, nor shall any sample exceed a
maximum fecal coliform concentration of 400/100 ml.
At all areas where shellfish may be harvested for human consumption (SHELL),
the median total coliform concentration throughout the water column for any
30-day period shall not exceed 70/100 ml nor shall more than 10% of the
samples collected during any 30-day period exceed 230/100 ml when a
3-tube decimal dilution test is used.
Arizona
(Cont'd)
Arkansas
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In nontidal waters designated for contact recreation (REC 1), the fecal
coliform concentration based on a minimum of not less than 5 samples for any
30-day period shall not exceed a log mean of 200/100 ml, nor shall more than
10% of samples duri-ng any 30-day period exceed 400/100 ml.
In nontidal waters designated for noncontact recreation (REC-2) and not
designated for contact recreation (REC-1), the average fecal coliform
concentration for any 30-day period shall not exceed 2,000/100 ml nor shall
more than 10% of samples collected during any 30-day period exceed 4,000/100
ml.
In nontidal waters used for domestic drinking water supply (MUN), the
arithmetic average of at least 5 samples collected over a 30-day interval
shall not exceed a total coliform concentration of 100 per 100 ml or a fecal
coliform of 20 per 100 ml.
(3) Central Coastal Basin
Objectives for inland surface waters, enclosed bays and estuaries.
In waters designated for contact recreation (REC-1) the fecal coliform
concentration, based on a minimum of not less than 5 samples for any 30-day
period, shall not exceed a log mean of 200/100 ml, nor shall more than 10%
of total samples during any 30-day period exceed 400/100 ml.
In waters designated for noncontact recreation (REC-2) and not designated
for contact recreation (REC-1), the fecal coliform concentrations based on a
minimum of not less than 5 samples for any 30-day period shall not exceed a
kg mean of 2,000/100 ml, nor shall more than 10% of samples collected during
any 30-day period exceed 4,000/100 ml.
At all areas where shellfish may be harvested for human consumption (SHELL),
the median total coliform concentration throughout the water column for any
30-day period shall not exceed 70/100 ml, nor shall more than 10% of the
samples collected during any 30-day period exceed 230/100 ml for a 5-tube
decimal dilution test or 330/100 ml when a 3-tube decimal dilution test is
used.
(4A) Santa Clara River Basin (Same as 3)
(4B) Los Angeles River Basin
Objectives for inland surface waters, enclosed bays and estuaries.
In waters designated for contact recreation (REC-1), the fecal coliform
concentration based on a minimum of not less than 5 samples for any 30-day
period, shall not exceed a log mean of 200/100 ml, nor shall more than 10%
of total samples during any 30-day period exceed 400/100 ml.
In waters designated for noncontact recreation (REC-2) and not designated
for contact recreation (REC-1) the average fecal coliform concentration for
any 30-day period shall not exceed 2,000/100 ml nor shall more than 10% of
samples collected during any 30-day period exceed 4,000/100 ml.
At all areas where shellfish may be harvested for human consumption (SHELL),
the median total coliform concentration throughout the water column for any
30-day period shall not exceed 70/100 ml rior shall more than 10% of the
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samples obtained during any 30-day period exceed 230/100 ml for a 5-tube
decimal dilution test or 330/100 ml when a 3-tube decimal dilution test is
used.
Where whole fish handling occurs (Fish Harbor in Los Angeles Inner Harbor)
the maximum number of E. coli organisms shall be less than 7 per ml. Not
more than 5 percent of the samples shall exceed 7 E. coli per ml.
(5A,B,C) Sacramento-San Joaquin Delta
This includes water quality objectives that apply to all inland surface
waters (excluding the Delta) of the basins, and objectives that apply only
to specific surface water bodies.
In waters designated for contact recreation (REC-1), the fecal col iform con-
centration based on a minimum of not less than 5 samples for any 30-day
period shall not exceed a geometric mean of 200/100 ml, nor shall more than
10% of the total number of samples taken during any 30-day period exceed
400/100 ml.
The following objective applies to the water body specified:
Fol som Lake
The fecal coliform concentration based on a minimum of not less than 5
samples for any 30-day period shall not exceed a geometric mean of 100/100
ml, nor shall more than 10% of the total number of samples taken during any
30-day period exceed 200/300 ml. This presents specific numeric objectives
which apply to the waters of the Sacramento-San Joaquin Delta. All waters
lying within the legal boundaries of the Delta are covered by these
objectives unless otherwise specified.
(5D) Tulare Lake Basin
In waters designated for contact recreation (REC-1), the fecal coliform con-
centration based on a minimum of not less than 5 samples for any 30-day
period, shall not exceed a geometric mean of 200/100 ml, nor shall more than
10% of total samples during any 30-day period exceed 400/100 ml.
(Same as 1A - REC-1)
(6A) North Lahontan Rasin
Waters shall not contain concentrations of coliform organisms attributable
to human wastes. Also in waters designated for contact recreation (REC-1),
the fecal coliform concentration based on a minimum of not less than 5
samples for any 30-day period, shall not exceed a log mean of 200/100 ml,
nor shall more than 10% of total samples during any 30-day period exceed
400/100 ml, with the following exceptions:
Eagl e Lake
Susan River
Lake Tahoe
Truckee River
East Fork Carson River
West Fork Carson River
East Walker River
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West Walker River
Lake Topaz
Bryant Creek
The fecal coliform concentration for these waters and their tributaries, based
on a minimum of not less than 5 samples for any 30-day period, shall not. exceed
a log mean of 20/100 ml, nor shall more than 10% of total samples during any
30-day period exceed 40/100 ml.
In waters designated for noncontact recreation (REC-2) and not designated for
contact recreation (REC-1), the average fecal coliform concentration for any
30-day period shall not exceed 2,000/100 ml nor shall more than 10% of samples
collected during any 30-day period exceed 4,000/100 ml.
(6R) South Lahontan Rasin
Waters shall not contain concentrations of coliform organisms attributable to
human wastes. Also, in waters designated for contact recreation (REC-1), the
fecal coliform concentration based on a minimum of not less than 5 samples for
any 30-day period shall not exceed a log mean of 200/100 ml, nor shall more than
10% of total samples during any 30-day period exceed 400/100 ml.
In waters designated for noncontact recreation (REC-2) and not designated for
contact recreation (REC-1), the average fecal coliform concentration for any
30-day period shall not exceed 2,000/100 ml nor shall more than 10% of samples
collected during any 30-day period exceed 4,000/100 ml.
(7A) West Colorado River Rasin
In waters designated for contact recreation (REC-1), the fecal coliform concen-
tration based on a minimum of not less than 5 samples for any 30-day period
shall not exceed a log mean of 200/100 ml, nor shall more than 10% of total
samples during any 30-day period exceed 400/100 ml. These bacteriological
values are to be used as maximum allowables for the purpose of upgrading the
bacteriological quality of those REC 1 waters whose fecal coliform levels are
generally in excess of the above as of the effective date of this plan.
Existing fecal coliform levels shall be maintained or shall be lowered where
feasible in those REC 1 waters whose existing fecal coliform levels are
generally below the listed levels as of the effective date of this plan.
In waters designated for noncontact recreation (REC-2) and not designated for
contact recreation (REC-1), the average fecal coliform concentration for any
30-day period shall not exceed 2,000/100 ml nor shall more than 10% of samples
collected during any 30-day period exceed 4,000/100 ml.
(7B) East Colorado River Basin
In waters designated for contact recreation (REC-1), the fecal coliform
concentrations based on a minimum of not less than 5 samples for any 30-day
period shall not exceed a log mean of 200/100 ml, nor shall more than 10% of
total samples during any 30-day period exceed 400/100 ml. These bacteriological
values are to be used as maximum allowables for the purpose of upgrading the
bacteriological quality of those REC-1 waters whose fecal coliform levels are
generally in excess of the above as of the effective date of this plan.
Existing fecal coliform levels shall be maintained or shall be lowered where
feasible, in those REC-1 waters whose existing fecal coliform levels are
generally below the listed levels as of the effective date of this plan.
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In waters designated for noncontact recreation (REC-2) and not designated
for contact recreation (REC-1), the average fecal coliform concentration for
any 30-day period shall not exceed 2,000/100 ml nor shall more than 10% of
samples collected during any 30-day period exceed 4,000/100 ml.
(8) Santa Ana River Basin
The following water quality objectives apply to all inland surface waters,
enclosed bays, and estuaries of the Basin.
1. Racteriological Characteristics
a.	At all areas where shellfish may be harvested for human consumption
the following bacteriological objectives shall be maintained throughout the
water column: (includes Sunset Bay Tidal Flat areas; Bolsa Bay; Newport Bay,
Upper and Lower; and San Gabriel River Tidal Prism between Marina Drive to
above Coyote Creek):
The median total coliform concentration shall not exceed 70 per 100 ml, and
not more than 10% of the samples shall exceed 230 per ml for a 5-tube
decimal dilution test or 330 per 100 ml, where the 3-tube decimal dilution
test is used.
b.	Within bay and tidal prism waters in water-contact sports areas
(includes Sunset Bay; Huntington Harbor: Bolsa Bay; Newport Bay, Upper and
Lower; and Tidal Prisms: Santa Ana River; Newport Shores Marina, South of
Highland Street; and San Gabriel River, between mouth and Marine Drive), the
following bacteriological water quality objectives shall be maintained
through the water column:
(1)	Samples of water from each sampling station shall have a concentration
of coliform organisms less than 1 ,000 per 100 ml (10 per ml), provided that
not more than 20% of the samples at any sampling station in any 30-day
period, may exceed 1,000 per 100 ml (10 per ml), and provided further that
no single sample when verified by a repeat sample taken within 48 hours
shall exceed 10,000 per 100 ml (100 per ml); and
(2)	Fecal coliform concentrations based on a minimum of not less than 5
samples for any 30-day period shall not exceed a log mean of 200 per 100 ml
nor shall the fecal coliform concentration of more than 10% of the total
samples during any 30-day period exceed 400 per 100 ml (as determined by
multiple tube fermentation procedure).
c. Inland Surface Waters
(1)	For all waters which are a direct source for municipal or domestic
supply the concentration of coliform organisms shall be less than 100 per
100 ml.
(2)	For all waters designated for beneficial use REC-1 (Water Contact
Recreation) the recreation of fecal coliform organisms, based on a minimum
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of not less than five samples for any 30-day period, shall not exceed a log
mean of 200/100 ml nor shall more than 10% of the total samples during any
30-day period exceed 400/100 ml.
(3) For all waters designated for beneficial use REC-2 (Non Body Contact
Recreation) the average fecal coliform concentration for any 30-day period
shall not exceed 2,000/100 ml nor shall more than 10% of samples collected
during any 30-day period exceed 4,000/100 ml.
(9) San Diego Rasin
In waters designated for contact recreation (REC-1), the fecal coliform
concentration based on a minimum of not less than 5 samples for any 30-day
period shall not exceed a log mean of 200/100 ml, nor shall more than 10% of
total samples during any 30-day perod exceed 400/100 ml.
In waters designated for noncontact recreation (REC-2) and not designated
for contact recreation (REC-1), the average fecal coliform concentration for
any 30-day period shall not exceed 2,000/100 ml nor shall more than 10% of
samples collected during any 30-day period exceed 4,000/100 ml.
At all areas where shellfish may be harvested for human consumption (SHELL),
the median total coliform concentration throughout the water column for any
30-day period shall not exceed 70/100 ml nor shall more than 10% of the
samples collected during any 30-day period exceed 230/100 ml for a 5-tube
decimal dilution test or 330/100 ml when a 3-tube decimal dilution test is
used.
In bays and estuaries, the most probable number of coliform organisms in the
upper 60 feet of the water column shall be less than 1 ,000 per 100 ml (10
per ml), provided that not more than 20% of the samples at any sampling
station, in any 30-day period may exceed 1 ,000 per 100 ml (10 per ml), and
provided further that no single sample when verified by a repeat sample
taken within 48 hours shall exceed 10,000 per 100 (100 per ml).
In San Oiego Ray where bay waters are used for whole fish handling, the
density of E. coli shall not exceed 7 per ml in more than 20% of any 20
consecutive samples of bay water.
Ocean PI an:
1. Within a zone bounded by the shoreline and a distance of 1,000 feet from
the shoreline or the 30-foot depth contour, whichever is further from the
shoreline, and in areas outside this zone used for body-contact sports, the
following bacteriological objectives shall be maintained throughout the
water column:
(a) Samples of water from each sampling station shall have a
concentration of coliform organisms less than 1 ,000 per 100 ml (10 per
ml), provided that not more than 20% of the samples at any sampling
station in any 30-day period may exceed 1 ,000 per 100 ml (10 per ml),
and provided further that no single sample when verified by a repeat
sample taken within 48 hours shall exceed 10,000 per 100 ml (100 per
ml).
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Colorado Class A (PWS): Log mean 1,000/100 total coliforms, nor exceed
2,000/100 in more than 10% of samples during month.
Class R.l (Cold water fishery): Same as A
Class B.2 (Warm water fishery): Same as A
Class B.3 (Body contact sports): Monthly average 1,000/100 total
coliform; nor exceed this in more than 20% of samples, nor exceed
2,400/100 in any sample. Also, 100/100 fecal coliforms and 20/100
fecal streptococcus (both as average of 5 samples within month).
Connecticut Classes A and AA (PWS): Median 100/100 total coliform nor more than
500/100 in more than 10% of samples.
Class R (Bathing): Median 1000/100 total coliforms, nor exceed
2,400/100 in more than 20% of samples.
Class C (F&WL, secondary contact recreation): 30-day average
5,000/100 total coliform, nor exceed this in more than 20% of
samples.
CI ass 5A (shel1): Not to exceed median MPN of 70/100 total coliforms,
nor exceed in more than 10% of samples MPN of 230 for 5-tube decimal
dilution or 330 for 3-tube decimal dilution.
Class 5B (Restr. Shell., Rec.): Not to exceed median of 700/100; not
more than 2,300 in more than 10% of samples.
Class 5C (F,WL, Shell Habitat): 30-day average 5,000/100 total
coliform nor exceed this in more than 20% of samples.
Delaware General criteria for all non-tidal portions of stream basin
(segments).
Fecal Coliform (except Naaman's The fecal coliform levels shall not
Creek Segment* see fecal	exceed a log mean of 200/100 ml.
coliform criteria for Delaware Samples shall be taken at such
River above RM 595. See 9D)) frequency and location as to permit
valid interpretations.
Specific criteria for all tidal portions of basins except
Delaware River and Chesapeake and Delaware Canal, but including
Atlantic Ocean and Delaware Ray below RM 48.2 in addition to
general criteria in 9A. Any repeated indicator/criteria found
here supersedes that of 9A.
Fecal coliform (for tidal
portions of Christina and
Brandywine, see fecal coli-
form criteria for Delaware
River above RM 59.5 (See 90)
Total Coliform (for shellfish
waters)
The fecal coliform levels shall not
exc eed a log mea n o f 200/10 ml
such frequency and location as to
permit valid interpretation.
The following recommended standards
of the Board of Health will govern.
The coliform median MPN of the
water shall not exceed 70 per 100 ml ,
and not have more than 10% of the
samples ordinarily exceed an MPN of
8

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Delaware (cont'd)	230 per 100 ml for a 5-tube
decimal dilution test (or 330
per 100 ml where the 3-tube
decimal test is used) in most
probable exposed to fecal
contamination during the most
favorabl e hydrogra-
phic and pollution conditions
in designated shellfish
areas. Samples shall be
taken at such frequency and
location as to permit valid
interpretation.
Specific criteria for Delaware River (from Pa.-Del. line, RM 78.8 to Liston
Point (RM 48.?) in addition to the general criteria of 9A. Repeated
indicator/criteria here supersede those of OA.
Fecal Col iform (above RM 59.5)	The fecal coliform shall not
exceed a log mean of 770/100
ml. Samples shall be taken
at such frequency and
location as to permit valid
interpretation.
Fecal Coliform (below RM 59.5)	The fecal coliform levels
shall not exceed a log mean
of 200/100 ml. Samples shall
be taken at such frequency
and location as to permit
valid interpretation.
Criteria are assigned to specific waters. Potomac River,
Md. to Key Bridge—Primary contact recreation as a future
anticipated use (1975).* Fecal coliform not to exceed
240/100 in 901 of samples. Potomac River, Key Bridge to
D.C.-Prince George's County Line—Secondary contact
recreation; Fecal col iforms not to exceed a geometric mean
of 1,000/100 nor equal or exceed 2,000/100 in more than 10%
of samples. Rock Creek (wading in upper reaches): Fecal
coliform not to exceed 200/100; not applicable during or
immediately following rainfall. Anacostia River and Oxon
Run are 1 ,000/100 ml.
(PWS): Monthly average 1 ,000/100 fecal coliforms: nor
exceed this number in more than 20% of the samples per
month; nor exceed 2,400/100 on any day. Fecal coliform
shall not exceed 200/100 ml (loq mean), nor shall 10% exceed
400/100 ml.
(Shellfish): Median coliform not exceed 70/100, not more
than 101 of samples exceed 230/100 in areas most probably
exposed to fecal contamination during most unfavorable
hydrographic and pollution conditions. Fecal - 14/100 ml;
10*, not exceeding 43/100 ml.
District of
Columbi a
F1orida
9

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(Body contact recreation/Fish and Wildlife): Monthly average
1,000/100 total coliform; nor exceed this number in more
than 20% of samples; nor exceed 2,400/100 ml on any day.
Fecal - 200/100 ml; 10% 400/100 ml; 800/100 ml any one day.
Concentrations of fecal coliform at any point shall not be
increased from natural conditions at any time.
Fecal coliform bacteria content shall not exceed an
arithmetic mean of 200 per 100 ml during any 30-day period
nor shall any sample exceed 400 per 100 ml at any time.
The median coliform bacteria content shall not exceed 70 per
100 ml during any 30-day period nor shall any sample exceed
230 per 100 ml at any time.
Where shellfish are collected for human consumption, the
microbiological standard for A or AA waters shall apply.
To determine compliance with the above microbiological
requirements where a "30-day period" is specified, a minimum
of ten samples shall be collected at aproximately equal
interval s.
Class (1) (PWS)
(a)	(Requiring disinfection only): Mean 50/100 fecal
coliforms; not exceed 200/100 in more than 5% of
samples during 90 days.
(b)	(Requiring treatment): Mean 1,000/100 fecal
col iforms on at least 4 samples within 30 days; not
exceed 4,000/100.
Class (2) (Recreation)
(a)	if naturally over 200/100 ml ave. may be 300/100 ml
(lakes); ave. of 500/100 ml (rivers).
(b)	Coastal Waters - 100/100 ml
(c)	Other - 200/100 ml.
Class (3) (F & WL): Same as (1)(b).
Shellfish: Consistent with National Shellfish
Sanitation Program.
Urban Streams: 2,000/100 ml ave.; not to exceed
5,000/100 ml.
Class (4) (Agriculture): Mean 5,000/100 fecal coliforms;
based on 4 samples - 30 day period.
Class (5) (Ind.): No coliform criteria.
Class (6) (Nav.): Same as (4).
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Hawaii
Class AA (nearly pristine): Median 70/100 total coliforms;
nor exceed 230/100 at any time.
Class A, 1 and 2 (all recreation; aesthetics): Total
coliform median 1 ,000/100, nor more than 10% of samples
exceed 2,400/100. Fecal coliforms: Arithmetic average
200/100 during 30 days, nor more than 10% exceed 400/100.
Drinking and food processing following simple chlorination,
fecal coliform arithmetic mean 200/100.
Class B (small boat harbors-commercial, bait fishing):
Fecal coliform arithmetic average 400/100; nor more than 10%
exceed 1,000/100.
Idaho	Bacteria criteria are adopted for individual waters.
Most rivers: Average 1 ,000/100 fecal coliform; 20% of
samples not to exceed 2,400/100.
Lower Snake, Palouse, Spokane and Moyie Rivers: Average
240/100 fecal coliforms; Pend Oreille River, Pend Oreille
Lake, Priest Lake and Coeur D'Alene Lake: Average 240/100
along shore line of lakes, 50/100 in main body of lake or
stream.
Illinois	General Standards Based on a minimum of 5 samples taken
over not more than a 30-day period, fecal coliforms (STORET
Number 31616) shall not exceed a geometric mean of 200 per
100 ml, nor shall more than 10% of the samples during any 30
day period exceed 400 per 100 ml.
Lake Michigan Rased on minimum of 5 samples taken over not
more than a 30 day period, fecal coliforms (STORET Number
31616) shall not exceed a geometric mean of 20 per 100 ml.
Secondary Contact and Indigenous Aquatic Life Based on a
minimum of 5 samples taken over not more than a 30-day
period, fecal coliforms (STORET Number 31616) shall not
exceed a geometric mean of 1 ,000 per 100 ml, nor shall more
than 10% of the samples during any 30-day period exceed
2,000 per 100 ml.
Indiana	SPC 1R-4, General Standards
(Bacterial Quality for Whole Body Contact)
Criteria for maintaining whole body contact recreation at
any point in the waters outside of the mixing zone is that
the fecal coliform bacteria content (either MPN or MF count)
shall not exceed 200 per 100 ml as a geometric mean based on
not less than 5 samples per month; nor exceed 400 per 100 ml
in more than 1 sample during the month. The months of April
through October, inclusive, are designated as the whole body
contact recreational season. During the remainder of the
year, Section 6(f) will apply.
(Bacterial Quality for Partial Body Contact)
Criteria for maintaining partial body contact recreation at
any point in the waters outside of the mixing zone is that
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Indiana	the fecal coliform bacteria content (either MPN or MF count)
(cont'd) shall not exceed 1,000 per 100 ml as a geometric mean based
on not less than 5 samples per month; nor exceed 2,000 per
100 ml in more than 1 sample.
(Water Quality for Potable Supply)
Following standards are established to protect the water
quality at the point at which water is withdrawn for
treatment and distribution as a potable supply:
(Bacteria) The coliform bacteria group shall not exceed
5,000 per 100 ml as a monthly average value (either MPN
or MF count); nor exceed this number in more than 20%
of the samples examined during any month; nor exceed
20,000 per 100 ml in more than 5% of such samples.
SPC 4R-2, Lake Michigan and Contiguous Harbor Areas
(Fecal Coliform Bacteria) The fecal coliform content for
whole body contact recreation shall not exceed 200/100 ml as
a monthly geometric mean based on not less than 5 samples
per month; nor exceed 400/100 ml in more than 10% of all
samples taken during a month. (MPN or MF count/100 ml.)
The fecal coliform content in the open water of Lake
Michigan shall not exceed a geometric mean of 20 per 100 ml.
SPC 7R-3, Grand Calumet River and Indiana Harbor Ship Canal
(Fecal Coliform Bacteria) The fecal coliform bacteria
content (either MPN or MF count) shall not exceed a
geometric mean of 1,000 per 100 ml, nor exceed 2,000 per 100
ml in more than 10% of the samples, except during periods of
storm water runoff.
SPC 10R-2, Wol f Lake
(Fecal Coliform Bacteria) The fecal coliform content
(either MPN or MF count) in Wolf Lake proper and Wolf Lake
Channel shall not exceed 200 per 100 ml as a geometric mean
based on not less than 5 samples; nor exceed 400 per 100 ml
in more than 10% of the samples.
SPC 12R, Salmonid Fishes
Rearing or Imprinting Areas
1.	Trail Creek and tributaries upstream of U.S. Highway
35.
2.	Little Calumet River and tributaries upstream
(easterly) of the Wagner Road Bridge. The Wagner Road
Bridge is located downstream of Chesterton at the
southeast corner of the southwest quarter, Section 26, T
37 N, R 6 W, Porter County, Indiana.
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Indiana(Cont'd) 3. Kintzele Ditch (Black Ditch) from Beverly Drive
downstream to Lake Michigan.
4. Salt Creek above its confluence with the Little Calumet
Ri ver.
Fecal Coliform Bacteria: The fecal col iform bacteria
content (either MPN or MF count) shall not exceed a
geometric mean of 200 per 100 ml, nor exceed 400 per 100 ml
in more than 10% of the samples.
Iowa	Full body contact: From April 1 - October 31, 200/100 ml
fecal coliform except when water is materially affected by
surface run-off. No discharge potentially containing
pathogens may increase the count of 200/100 ml f.c.
Partial body contact: April 1 - October 31: 2,000/100 ml
fecal coliform.
Kansas	Recreation including fishing: 2,000/100 fecal coliform per
sampl e.
Body contact recreation: Monthly log mean fecal coliforms
200/100; no more than 10% of samples per month exceed
400/100 fecal coliforms.
Kentucky	PWS: Monthly arithmetical average 5,000/100 total
coliforms;not exceed this number in more than 20% of the
samples; nor exceed 20,000/100 in more than 5% of the
sampl es.
Recreation including body contact: Average 1,000/100 total
coliforms; not exceed this number in 20% of the samples; nor
exceed 2,400/100 on any day. If the level of total is
exceeded, then fecal coliforms standard to be used: During
May-0ct., 200/100 fecal coliform monthly geometric mean, nor
exceed 400/100 in more than 10% of the samples, and during
Nov.-Apr. 1,000/100 fecal coliforms monthly geometric mean
nor exceed 2,000/100 in more than 10% of the samples.
Aquatic life for Federally promulgated streams: 2,000/100
ml nor exceed a maximum of 4,000/100 ml.
Louisiana	Standard #1 PRIMARY CONTACT RECREATION - Based on a
minimum of not less than 5 samples taken over
not more than a 30-day period, the fecal
coliform content shall not exceed a log mean
of 200/100 ml nor shall more than 10% of the
total samples during any 30-day period exceed
400/100 ml.
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Louisiana	Standard #2 SECONDARY CONTACT RECREATION - Based on a
(cont'd)	minimum of not less than 5 samples taken over
not more than a 30-day period, the fecal
coliform content shall not exceed a log mean
of 1,000/100 ml nor shall more than 10% of
the total samples during any 30-day period
equal or exceed 2,000/100 ml.
Standard #3 PUBLIC WATER SUPPLY - The monthly arithmetic
average of total coliform MPN (most probable
number) shall not exceed 10,000/100 ml nor
shall the monthly arithmetic average of fecal
col i forms exceed 2,000/100 ml.
Standard £4 SHELLFISH PROPAGATION - The monthly total
coliform median MPN (most probable number)
shall not exceed 70 per 100 ml and not more
than 10% of the samples ordinarily exceed an
MPN of 230/100 ml.
Maine	Freshwater
Class A (PWS after disinfection; water contact
recreation) - 100/100 total coliform
bacteria.
Class GP-A (PWS after disinfection; water contact
recreation) - 20/100 fecal coliform bacteria.
Class B-l GP-B - (PWS after treatment; water contact
recreation; fish and wildlife) - 60/100 fecal
coliform bacteria.
Class B-2 (PWS after treatment; water contact
recreation; fish and wildlife) - 200/100
fecal coliform bacteria.
Class C (Fish and wildlife) - 1 ,000/100 fecal
coliform bacteria.
Class D (Power; navigation) - Only in those amounts
which Commission determines will not indicate
a condition harmful to public health or
impair assigned uses.
Marine Water
Class SA (Shellfish harvesting direct human
consumption; water contact recreation; fish
and wildlife) - Median total coliform 70/100
nor more than 10% of samples exceed 230/100.
Median fecal coliform 14/100 nor more than
10% of samples exceed 43/100.
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Maine	Class SR-1 (Uses same as SA) - Shellfish growing areas
(cont'd)	same as SA. Non-shellfish growing areas:
median total col iform 240/100 nor more than
10% of samples exceed 500/100. Median fecal
coliform 50/100 nor more than 10% exceed
150/100.
Class SB-2 (Uses same as SA) - Shellfish growing areas
same as SA. Non-shellfish growing areas:
median total coliform 500/100 nor more than
10% of samples exceed 1,000/100. Median
fecal coliform 100/100 nor more than 10%
exceed 200/100.
Class SC (Shellfish harvesting for consumption after
depuration; fish and wildlife) - Shellfish
growing areas: median total col iform 700/100
nor more than 10% of samples exceed
2,300/100. Median fecal coliform 150/100 nor
more than 10% of samples exceed 500/100.
Non-shellfish growing areas: median total
coliform 1,500/100 nor more than 10% of
samples exceed 5000/100. Median fecal
coliform 300/100 nor more than 10% exceed
1 ,000/100.
Class SD (Power; navigation; ind.) - Only in those
amounts which Commission determines will not
indicate a condition harmful to public health
or impair assigned uses.
Maryland Class A Not greater than	log mean of 200/100 ml (all waters
except SHW).
Class B Not greater than	MPN of 70/100 ml as a median; not
greater than 10%	highest MPN of 230/100 ml (SHW).
Class C (F & WL): Same as B (water contact recreation).
Massachusett Class A (PWS): Not exceed log mean 50/100 total coliform.
Class B (Water contact; PWS with treatment): Not exceed
log mean 200/100 fecal col iforms, nor exceed
400/100 in more than 10% of samples.
Class C (recreational boating, F &WL): Not exceed log
mean 1,000/100 fecal coliform, nor exceed 2,500/100
in more than 10% of samples.
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Massachusetts
(cont'd)
Michigan
Minnesota
Class SA (body contact sports, shellfish): Median total
coliforms MPN 70/100, not exceed 230/100 in more
than 10% of samples during month.
Class SB (bathing, F & WL, restricted shellfish): Median
total coliforms MPN 700/100, not exceed 1,000/100
in more than 20% of samples during month.
Class SC (recreational boating, F & WL): Shall not exceed
log mean 1 ,000/100 fecal col i form, nor exceed
2,500/100 in more than 10% of samples.
Fecal col i form.
(1)	Waters of the State protected for total body
contact recreation shall contain not more than 200 fecal
coliforms per 100 milliliters; and all other waters of
the State shall contain not more than 1 ,000 fecal
coliforms per 100 milliliters. These concentrations may
be exceeded if due to uncontrollable non-point sources.
(2)	Compliance with the fecal coliform standards
prescribed by subrule (1) shall be determined on the
basis of the geometric average of any series of 5 or
more consecutive samples taken over not more than a
30-day period.
1. Domestic Consumption
Class A
Total coliform organisms
Class B
Fecal coliform organisms
Class C
Fecal coliform organisms
Class n
Fecal coliform organisms
1 most probabl e number per
100 mil 1iliters.
10 most probable number per
100 mil 1il iters.
200 most probable number
per 100 mil 1 il iters.
200 most probable number
per 100 milliliters.
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Minnesota
(cont'd)
Fisheries and Recreation
CI ass A
Fecal coliform organisms - 200 most probable number
per 100 milliliters as a monthly geometric mean based
on not less than 5 samples per month, nor exceed 400
most probable number per 100 milliliters in more than
10% of all samples during the month.
Class B
Fecal coliform organisms - 200 most probable number
per 100 milliliters as a monthly geometric mean based
on not less than 5 samples per month, nor equal or
exceed 2,000 most probable number per 100 milliliters
in more than 10% of all samples during any month.
CI ass C
Fecal coliform organisms - 200 most probable number
per 100 milliliters as a geometric mean or exceed
2,000 most probable number per 100 milliliters in more
than 10% of all samples.
Industrial Consumption
CI asses A, B, and C
Fecal coliform organisms - 200
per
Agriculture and Wildlife
Class A
Fecal coliform organisms - 200
per
Class B
Fecal coliform organisms - 200
per
Navigation and Waste Disposal
Fecal coliform organisms - 200
per
most probable number
100 mill il iters.
most probable number
100 milliliters.
most probabl e number
100 mil 1 il iters.
most probable number
100 mil 1 il iters.
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Mississippi Class 1 PWS: Monthly average fecal coliforms not exceed
2,000/100, based on at least 5 samples a month, nor
exceed 4,000/100 any 1 sample.
Class 2 Shellfish: MPN shall not exceed 14/100 ml, nor more
than 10% ordinarily exceed an MPN of 43/100 ml in
areas most probably exposed to fecal contamination
during most unfavorable hydrographic and pollutional
conditions.
Class 3 Recreation (include body contact): Monthly average
fecal coliforms not exceed 200/100, nor exceed this
in more than 20% of the samples, nor exceed 400/100
at any time.
Class 4 Fish and wildlife: Fecal coliforms not exceed
2,000/100 ml, nor shall more than 10% of samples
during month exceed 4,000/100 ml. Shall not exceed
a geometric mean of 2,000/100 ml, nor shall 10% of
the samples exceed 4,000/100 ml.
Missouri Full body contact: Fecal coliform shall not exceed 200/100 ml
geometric mean during recreational season (April 1 - October
31).
Montana	Class A (PWS after disinfection): Average total coliform
less than 50/100.
Class A (PWS after disinfection & removal of natural
impurities): Average total coliform less than
50/100 as result of domestic sewage.
Class B (PWS after treatment): Average total coliforms less
than 1,000/100 where demonstrated to be result of
domestic sewage; not more than 20% of samples to
exceed this value.
All other classifications: Same as B.
Nebraska Class 1 Full body contact sport: Not exceed geometric mean
200/100 ml fecal coliform and not exceed 400/100 ml
in more than 10% of samples.
Class 2 Partial body contact: Not to exceed geometric mean
of 1 ,000/100 ml and less than 10% will be greater
than 2,000/100 ml fecal coliform.
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Nevada Fecal Cotiform (interstate waters) - The annual geometric mean shall
not exceed 100 per 100 milliliters nor shall the number of fecal
coliform in a single sample exceed 200 per 100 milliliters.
Fecal Coliform (intrastate waters) - The annual geometric mean shall
not exceed 200 per 100 milliliters nor shall the number of fecal
coliform in a single sample exceed 400 per 100 milliliters.
Fecal Coliform - The more stringent of the following apply:
Interstate	The fecal coliform concentration shall not exceed a
waters	geometric mean of 1,000 per 100 milliliters nor shall
more than 20% of total samples exceed 2,400 per 100
milliliters.
The annual geometric mean of fecal coliform concentra-
tion shall not exceed that characteristic of natural
conditions by more than 200 per 100 milliliters nor
shall the number of fecal coliform in a single sample
exceed that characteristic of natural conditions by more
than 400 per 100 milliliters.
Fecal Coliform
Interstate
CI ass A waters
Fecal Coliform
Interstate
CI ass C waters
Fecal Coliform
Inaterstate
Class C waters
The fecal coliform concentration, based on a minimum of
5 samples during any 30-day period shall not exceed a
geometric mean of 200 per 100 milliliters, nor shall
more than 10% of total samples during any 30-day period
exceed 400 per 100 milliliters.
The more stringent of the following apply: The fecal
coliform concentration shall not exceed a geometric mean
of 1 ,000 per 100 milliliters nor shall more than 20% of
total samples exceed 2,400 per 100 milliliters.
The annual geometric mean of fecal coliform
concentration shall not exceed that characteristic of
natural conditions by more than 200 per 100 milliliters
nor shall the number of fecal coliform in a single
sample exceed that characteristic of natural conditions
by more than 400 per 100 milliliters.
The fecal coliform concentration, based on a minimum of
5 samples during any 30-day period, shall not exceed a
geometric mean of 200 per 100 milliliters, nor shall
more than 10% of total samples during any 30-day period
exceed 400 per 100 milliliters. This is applicable only
to those waters used for primary contact recreation.
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New Hampshire Class A (highest quality; PWS after disinfection): 50/100
total col iforms.
Class B (bathing, fish and wildlife): 240/100 total
coliforms freshwater; 70/100 total col iform shellfish-
growing waters.
Class C (recreational boating, fish and wildlife): 1 ,000/100
total coliforms, nor shall exceed 2,500/100 total
coliforms waters affected by combined sewer overflows.
New Jersey Class FW-1 - Natural conditions
FW-2,FW-3,TW-1 (primary contact recreation) - Monthly
geometric mean fecal coliform 200/100 ml.
TW-1,CW-1 ,CW-2 (shellfishing) - National Shellfish
Sanitation Program limits.
CW-1 (primary contact recreation) - Monthly geometric
mean fecal coliform 50/100 ml.
TW-2 (secondary contact recreation) - Monthly geometric
average fecal coliform 770/100 ml.
TW-3 (secondary contact recreation) - Monthly geometric
average fecal coliform 1 ,500/100 ml.
CW-2 (secondary contact recreation) - Monthly geometric
average fecal coliform 200/100 ml.
Class FW - Central Pine Barrens - Monthly geometric mean fecal
coliform 200/100 ml, not more than 10% greater than
400/100 ml.
Class Lower Mullica and Wading Rivers - same as
FW-Central Pine Barrens.
New Mexico Criteria are assigned by river basin. The criteria listed
below are representative.
Pecos River (irrig., recreation, F & WL): Geometric average
fecal coliform 200/100 or 100/100.
Canadian River (PWS, fishery): Arithmetic average fecal
coliforms 2,000/100; where body contact recreation, same as
Pecos River.
New York Class N - Natural conditions
AA - Monthly median total coliform 50/100 ml, not more
than 20% greater than 240/100 ml.
A - Monthly median total coliform 5,000/100 ml, not more
than 20% greater than 20,000/100 ml. Monthly geometric
mean fecal coliform 200/100 ml.
B&SB - Monthly median TC 2,400/100 ml, not more than 20%
greater than 5,000/100 ml. Monthly geometric mean fecal
coliform 200/100 ml when disinfection required.
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New YorK	C&SC - Monthly geometric mean TC 10,000/100 ml, FC 2,000/100
(cont'd)	ml when disinfection required.
D&SD - No standard.
SA (shellfish) - Median MPN for TC 70/100 ml.
A - Special - Monthly geometric mean total coliform
1,000/100 ml. Monthly geometric mean fecal coliform 200/100
ml.
AA - Special - Natural conditions
I - same as SC
North Carolina Class A-I (PWS): Monthly average total coliforms 50/100.
Class A-II(PWS after treatment): Monthly average total
coliforms 5,000/100 nor exceed this in more than 20% of the
samples, nor exceed 20,000/100 in more than 5% of the
samples. Fecal coliforms not exceed monthly log mean of
1,000/100, nor exceed 2,000/100 in more than 20% of samples
(not applicable during or immediately following rainfall).
Class B (bathing): Monthly log mean fecal coliforms not
exceed 200/100 nor exceed 400/100 in more than 20% of
samples (not applicable during or immediately following
rainfall). Applicable only during the months of May thru
September. During other months the standard shall be the
same as Class C.
Class C (F & WL): Monthly log mean fecal coliforms not
exceed 1,000/100, nor exceed 2,000/100 in more than 20% of
samples (not applicable during or immediately following
rainfall). In certain stream segments where uncontrollable
non-point source pollution prevents the attainment of the
standards, exceptions will be given on a case-by-case basis.
SA (shell): Median total coliforms not exceed 70/100, nor
more than 10% of samples exceed 230/100 (5-tube) or 330/100
(3-tube) in areas most probably exposed to fecal
contamination during most unfavorable hydrographic and
pollution conditions.
SB (bathing): Same as B.
SC (F & WL, boating): Same as C.
North Dakota Criteria are assigned by river basin. The criteria listed
below are representative.
Red River of the North: Monthly arithmetic average total
coliform 5,000/100, nor exceed this in more than 20% of
samples, nor exceed 10,000/100 in more than 5% of samples.
Average arithmetic monthly total coliforms not exceed
1,000/100 in Lake Ashtabula and Homme Dam Reservoirs.
James River (PWS, ind., rec., F & WL): Average arithmetic
monthly not exceed 1,000/100 total coliforms in the
Jamestown Reservoir. Average arithmetic monthly not exceed
3,000/100 in the river nor exceed this number in more than
20% of samples, nor exceed 7,500/100 in more than 5% of
sampl es.
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North Dakota Footnote 1, all areas: In general, waters with col iform
(cont'd) count of 1 ,000/100 or less are considered relatively safe
for swimming. Natural physical characteristics of the river
banks and bed and natural water turbidities in the area must
also be considered.
Ohio	BATHING WATERS
These are waters suitable for swimming where a lifeguard
and/or bathhouse facilities are present, during the
recreation season.
Fecal col iform - Geometric mean fecal col iform content
(either MPN or MF), based on not less than 5 samples within
a 30-day period shall not exceed 200 per 100 ml and shall
not exceed 400 per 100 ml in more than 10% of the samples
taken during any 30-day period.
PRIMARY CONTACT RECREATION
These are waters suitable for full body contact recreation,
such as, but not limited to: swinging and scuba diving with
minimal threat to public health as a result of water
quality, during the recreation season.
Fecal col iform- Geometric mean fecal col iform content
(either MPN or MF), based on not less than 5 samples within
a 30-day period shall not exceed 1,000 per 100 ml and shall
not exceed 2,000 per 100 ml in more than 10% of the samples
taken during any 30-day period.
SECONDARY CONTACT RECREATION
These are waters suitable for partial body contact
recreation, such as, but not limited to: canoeing and wading
with minimal threat to public health as a result of water
quality during the recreation season.
Fecal coliform - shall not exceed 5,000 per 100 ml (either
MPN or MF) in more than 10% of the samples taken during any
30-day period.
Lake Erie, outside of the excepted areas
Fecal col iform - Geometric mean fecal coliform content
(either MPN or MF), based on not less than 5 samples within
a 30-day period shall not exceed 200 per 100 ml and shall
not exceed 400 per 100 ml in more than 10% of the samples
taken during any 30-day period.
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Ohio (Cont'd) Lake Erie, within excepted areas - Same as primary contact
recreation.
OHIO RIVER
Bacterid:
(1)	Fecal coliform for primary recreation: Content
(either MPN or MF count) shall not exceed 200/100
ml as a monthly geometric mean based on not less
than 5 samples per month; nor exceed 400 per 100 ml
in more than 10% of all samples taken during month;
these limits are applicable to waters designated
for recreational use during the recreation season.
(2)	Fecal coliform for potable water supply: Fecal
coliform content (either MPN or MF count) shall not
exceed 2,000/100 ml as a monthly geometric mean
based on not less than 5 samples per month,
MAHONING RIVER 8ASIN
The Mahoning River upstream of the Leavittsburg Dam and
all tributaries except Littl e Squaw Creek downstream of
Highway 1-80; Hfnes Run downstream of Lowe!Ivflle Road;
Mosquito Creek downstream of Federal Street in Niles;
the last 200 yards of Yellow Creek.
For Public Hater Supply
Waters designated as a source of public water
supply will be of such quality that Federal
Orinking Water Standards for finished water can be
met by conventional treatment which Includes
coagulation, filtration and disinfection.
The following criteria are applicable to stream
waters used as a potable supply:
Bacteria: Coliform group not to exceed 5,000
per TOO ml as monthly average value (either
MPN or MF count); nor exceed this number in
more than 20% of the samples examined during
any month; nor exceed 20,000 per 100 ml in
more than 5% of such samples.
For Recreation
The following criterion 1s for evaluation of
conditions for waters designated to be used for
recreational purposes*.
(i) Primary Contact - (Swimming and Waterskiing)
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Ohio (con'd) Bacteria: The fecal coliform content (either MPN or
MF count) not to exceed 200 per 100 ml as a monthly
geometric mean based on not less than 5 -samples per
month; nor exceed 400 per 100 ml in more than 10%
of all samples taken during a month.
(ii) Secondary Contact - (Boating, Fishing and Wading)
Bacteria: The fecal coliform content (either MPN or MF
count) not to exceed 1 ,000 per 100 ml as a monthly
geometric mean based on not less than 5 samples per
month; nor exceed 2,000 per 100 ml in more than 10% of
all samples taken during a month.
MAHONING RIVER - LOWER MAIN STEM AND CERTAIN TRIBUTARIES
Mile Points from Mouth
Reach No.	Beginning Ending
1	Leavittsburg Dam to Main
St. in Warren	46.08	38.08
2	Main St. in Warren to the
Lowellville Dam	38.08	12.81
3	Lowellville Dam to the
Ohio-Pa. State line	12.81	11.61
CERTAIN TRIBUTARIES TO WHICH THIS REGULATION APPLIES ARE:
(a)	Mosquito Creek from Federal Street in Niles to its
mouth.
(b)	Little Squaw Creek from Highway 1-80 to its mouth.
(c)	Hines Run, from Lowellville Road to its mouth.
(d)	Yellow Creek, the last 200 yards to its mouth.
For Public Water Supply
(i)	Water classified as a source of public water
supply will be of such quality that Federal
Drinking Water Standards for finished water
can be met: For classification PWS0 by
conventional treatment which includes
coagulation, filtration, and disinfection;
(ii)	For classification PWSi by one or a
combination of the following practices in
conjunction with conventional treatment;
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Ohio (cont'd)
(a)
selective withdrawal and control of raw
water.
(b)	lime-soda softening
(c)	activated carbon
bacteria: coliform group not to exceed
2,000 (for PWS0), 5,000 (for PWS^
per 100 ml as a monthly geometric mean
(either MPN or MF count); or exceed this
number in more than 20% of the samples
examined during any month; nor exceed
20,000 per 100 ml in more than 5% of such
sampl es.
For Body Contact Recreation
Waters classified in the two subcategories of
body contact recreation will be suitable for
recreation in (Rpc) or on (Rsc) the waters,
and will not threaten the public's health and
safety in such uses.
The following criteria apply to the respective
subcategories:
(a)	Primary contact recreation - Rpc.
(swimming and water skiing)
Bacteria: The fecal col iform content
(either MPN or MF count) not to exceed
1,000 per 100 ml as a monthly geometric
mean based on not less than 5 samples per
month; nor exceed 2,000 per 100 ml in
more than 10% of all samples taken during
a month.
(b)	Secondary contact recreation - Rsc.
(boating and fishing)
Bacteria: The fecal col iform content
(either MPN or MF count) not to exceed
2,000 per 100 ml as a monthly geometric
mean based on not less than 5 samples per
month; nor exceed 3,000 per 100 ml in
more than 10% of all samples taken during
a month.
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Ohio (Cont'd) LOWER CUYAHOGA RIVER
(1)	Geometric mean fecal coliform content (either
MPN or MF count), based on not less than 5 samples
within a 30-day period, shall not exceed 200 per
100 ml.
(2)	Fecal coliform content (either MPN or MF
count) shall not exceed 400 per/100 ml in more than
10% of the samples taken during any 30- day period.
That portion of the Lower Cuyahoga river from the
Cleveland Southerly Sewage Treatment Plant to the
mouth of the Cuyahoga River is hereby classified as
appropriate for industrial water supply and
secondary contact recreational uses.
Recreation Season is the period from 1 May to 15 October.
Oklahoma	In all waters designated as Emergency Public and Private
Water Supplies, it is desirable that the monthly arithmetic
mean of total coliform, as determined by multiple tube
fermentation or membrane filter procedures, shall not exceed
10,000/100 ml, and that the monthly arithmetic mean of fecal
coliform not exceed 2,000/100 mg.
In waters designated for Public and Private Water Supplies
and Primary Body Contact Recreation, the bacteria of the
fecal coliform group shall not exceed a monthly geometric
mean of 200/100 ml, as determined by multiple tube
fermentation or membrane or membrane filter procedures based
on a minimum of not less than five (5) samples taken over
not more than a thirty (30) day period. Further, in no more
than 10% of the total samples during any thirty (30) day
period shall the bacteria of the fecal coliform group exceed
400/100 ml.
Oregon	General Water Quality Standards: No discharge which will
cause in any waters:. . . Bacterial pollution . . .
deleterious to waters used for domestic purposes, livestock
waters, irrigation, bathing, or shellfish propagation, or be
otherwise injurious to public health. Special standards for
Goose Lake, Klamath River, Multnomah Channel, Willamette
River, Grande Ronde River, Walla Walla River and Snake
River: Coliforms where associated with fecal sources,
average not to exceed 1,000/100, with 20% of samples not to
exceed 2,400/100.
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Oregon (cont'd) Special standards for Columbia River: From eastern
Oregon-Washington boundary to Hwy. 5 bridge between
Vancouver and Portland: Average not to exceed 240/100 fecal
coliform nor exceed this in more than 20% of samples. From
bridge to mouth, same as special standard for Goose Lake,
etc.
Special standards for marine and estuarine water: For
shellfish, median not exceed 70/100. For others, same as
upper Columbia.
Pennsylvania Class fj - The fecal coliform density in 5 consecutive
samples shall not exceed a geometric mean of
200 per 100 ml.
f2 - (Coliforms/100 ml) - Not more than 5,000/100
ml as a monthly average value, nor more than
this number in more than 20% of the samples
collected during any month, nor more than
20,000/100 ml in more than 5% of the sample.
f3 - (Col iforms/100 ml) - Not more than 5,000/100
ml as a monthly geometric mean.
^4 - (Fecal col iforms/100 ml)-Maximum geometric
mean of 770/100 ml; samples shall be taken at
a frequency and location to permit valid
i nterpretation.
Puerto Rico Class SA (existing phenomena): Monthly geometric mean fecal
coliform 70/100 ml, not more than 20% greater than
200/100 ml.
Class SR (shellfish): Median value total coliform 70/100 ml,
not more than 20% greater than 230/100 ml (bathing):
Monthly geometric mean fecal coliform 200/100 ml, not
more than 20% greater than 400/100 ml.
Class SC (secondary contact recreation): Monthly geometric
mean fecal coliform 2,000/100 ml, not more than 20%
greater than 4,000/100 ml. Monthly geometric mean
total coliform 10,000/100 ml.
Class SD (PWS): same as SC.
Rhode Island Class A (uniformly excellent; all uses): Total coliforms
not to exceed median 100/100, nor more than 10% of
samples exceed 500/100.
Class R (primary contact recreation): Total coliforms not
exceed median of 1,000/100 nor more than 2,400/100 in
more than 20% of samples.
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Rhode Island Class C (secondary contact recreation): None in
(cont'd) concentrations that would impair assigned uses.
Class n (navigation, etc.)- Same as C.
Class SA (shell.): Total coliforms not to exceed median MPN
of 70/100, nor more than 10% of samples exceed 230/100
(5-tube) or 330/100 (3-tube).
Class SB (primary contact recreation; restricted shell.
area): Total coliforms not to exceed median 700/100,
nor more than 2,300 in more than 10% of the samples.
Class SC (secondary contact recreation; fish and shellfish
habitat): Same as C.
Class SO (navigation, industry, etc.): Same as C.
NOTE: Bacteria surveys of sea waters should include
sampling during periods of most unfavorable
hydrographic and pollution conditions.
South Carolina Class AA (PWS with only disinfection and pH adjustment):
Fecal coliforms not exceed 20/100 monthly arithmetic
average.
Class A (swimming): Fecal coliforms not exceed geometric
mean 200/100, nor more than 10% of samples during 30
days exceed 400/100.
Class B (PWS, fish survival, industry, agriculture,
secondary contact recreation): Fecal coliforms not
exceed geometric mean 1,000/100 ml nor exceed
2,000/100 in more than 20% of samples (not applicable
during or following rainfall).
Class SAA (outstanding, salt): median of 70/100 ml; nor
shall more than 10% of 5 samples exceed a MPN of
230/100 ml; or current Dept. of Health and Env.
Control & U.S. FDA standards.
Class SA (shellfish): Same as SAA.
Class SB (bathing): Same as A.
Class SC (all uses except shellfish mkt. and bathing): Same
as B.
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South Dakota Class 1 (PWS): Total coliforms not exceed MPN or MF
(Millipore Filter) of 5,000/100 monthly average, nor
exceed this in more than 20% of samples, nor exceed
20,000/100 in more than 5% of samples.
Class 2 (fish life propagation): No criteria.
Class 3(a) (immersion sports): Fecal coliform not exceed
200/100 monthly average, nor exceed this in more than
20% of samples, nor exceed 400/100 on any day during
the recreation season.
Class 3(b) (limited contact recreation): Fecal coliforms
1,000/100 monthly average, nor exceed this in more
than 20% of samples, nor exceed 2,000/100 on any day
during the recreation season.
Class 4 (wildlife): No criteria.
Class 5 (irrigation—appl icable during the irrigation
season only, and only to waters used to irrigate root
crops and recreation areas): Fecal coliforms not
exceed 1,000/100 monthly average, nor exceed 2,000/100
in any sample.
Class 6 (commerce & ind.): No criteria.
Class 7 (intermittent stream): Total coliform not exceed
20,000/100 monthly average, nor exceed in more than
20% of samples in month; nor exceed 50,000/100 in any
sample.
Tennessee	Class 1 (PWS): Total coliform not exceed 1,000/100 monthly
average (geometric mean) based on at least 10 samples
of a period not more than 30 days, samples being
collected at intervals not less than 12 hours. Fecal
coliform shall not exceed 5,000/100 in any individual
sampl e.
Class 2 (Ind.): No criteria.
Class 3 (F & WL): No criteria.
Class 4 (Rec.): Fecal coliform not exceed 200/100 as a
geometric mean based on at least 10 samples of a
period not more than 30 days, samples being collected
at intervals not less than 12 hours. For water
contact rec., fecal coliform not exceed 1,000/100 in
any individual sample. Water areas near outfalls of
domestic sewage treatment plants are not considered
suitable for water contact recreation.
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Texas	a. Contact recreation waters
Surface waters suitable for contact recreation shall not
exceed a logarithmic mean (geometric mean) fecal
coliform content from a representative sampling of not
less than 5 samples collected over not more than 30
days, as determined by either multiple-tube fermentation
or membrane filter techniques, of 200/100 ml, nor shall
more than 10% of total samples during any 30-day period
exceed 400/100 ml.
Simple compliance with bacteriological standards does
not insure that waters are safe for primary contact
recreation, such as swimming. Longstanding public
health principles mandate that watershed sanitary
surveys be conducted in order to adequately evaluate the
sanitary hazards potentially present on any natural
watercourse.
b. Noncontact recreation waters
Surface waters for general or noncontact recreation
should, with specific and limited exceptions, be
suitable for human use in recreation activities not
involving significant risks of ingestion. These waters
shall not exceed a logarithmic mean (geometric mean)
fecal coliform content of 2,000/100 ml, nor equal or
exceed 4,000/100 ml in more than 10% of the samples,
except in specified mixing zones adjacent to outfalls.
c. Domestic raw water supply
It is the goal that the chemical quality of all surface
waters used for domestic raw water supply conform to the
U. S. Public Health Service, Drinking Water Standards,
revised 1962 or latest revision. However, it must be
realized that some surface waters are being used that
cannot meet these standards. Since in these cases it is
the only source available, these surface waters may be
deemed suitable for use as a domestic raw water supply,
where the chemical constituents do not pose a potential
health hazard.
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Texas (cont'd)	National primary drinking water regulations are to be
established by the Environmental Protection Agency
pursuant to the Safe Drinking Water Act. These
regulations shall specify a maximum contaminant level or
require the use of specific treatment techniques for
contaminants. Domestic raw water supply quality should
be consistent with the findings of EPA regarding maximum
contaminants and treatment techniques.
It is desirable that the total col iform content should
not exceed 100/100 ml and the fecal col i form content
20/100 ml; however, domestic water supplies should not
be considered unacceptable if an adequate number of
samples show monthly arithmetic averages for total
col iform to be less than 10,000/100 ml and fecal
coliform to be less than 2,000/100 ml.
The evaluation of raw water cannot be reduced to simply
counting bacteria of any kind and the foregoing must be
used with judgment and discretion and this paragraph is
not intended to limit the responsibilities and
authorities of responsible local governments or local
health agencies.
Trust Territories There shall be no discharge of sewage, industrial
wastes, or other wastes into waters designated for
public or domestic water supply. To the extent that
such discharges are now occurring and such discharges
reach surface waters, fecal coliforms shall not exceed
an arithmetic mean of 20/100 ml in any 30-day period.
Fresh ground waters designated for public or domestic
water supply shall be protected and preserved so that
they will meet PHS Drinking Water Standards.
The fecal coliform limit in primary contact waters shall
not exceed a log mean of 200/100 ml nor exceed 400/100
ml in more than 10% of samples during any 30-day period.
In shellfish areas, coliform concentrations shall comply
with Public Health Service Shellfish Standards in its
latest revision (shellfish).
Fecal coliform limits shall not exceed 2000/100 ml at
any time or at any place.
Utah	Class A (PWS without treatment; recreation): Bacterial
standards as prescribed for drinking water by PHS
Drinking Water Standards, 1962.
Class B (PWS after disinfection; recreation): Monthly
arithmetic mean coliforms not exceed 50/100 ml; 20% of
samples may exceed this if no more than 5% exceed
100/100.
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Virgin Islands Class A (natural phenomena): No change.
Class B (primary contact recreation): Fecal coliforms not to
exceed a geometric (log) mean of 70/100 ml by MF or
MPN count.
Class C (secondary contact recreation): Fecal coliform not
to exceed a geometric (log) mean od 1 ,000/100 ml by MF
or MPN count.
Washington Statewide use classification system plus specific criteria
for specific areas.
Class AA Extraordinary (all uses): Fecal coliforms not
exceed median of 50/100 (fresh water) or 14/100
(marine) with less than 10% of samples exceeding
43/100 when associated with any fecal source.
Class A Excellent (PWS, swimming, shellfish reprod., rearing
& harvest): Fecal coliforms not exceed median, val ues
of 100/100 (fresh water) with less than 10% of samples
exceeding 200/100 when associated with any fecal
source or same as AA (marine).
Class B Good (swimming, shellfish reproduction and rearing,
and Crustacea (crabs, shrimp, etc.) harvest): Fecal
coliforms not exceed median values of 200/100, with
less than 10% of samples exceeding 400/100 when
associated with any fecal source.
Class C Fair (comm., nav., boating): Fecal coliforms not
exceed median values of 200/100 when associated with
any fecal source.
West Virginia Criteria are assigned by river basin.
Majority of river basins: Total coliforms not to exceed
1,000/100 monthly average, nor exceed this in 20% of
samples, nor exceed 2,400/100 on any day.
Fecal coliform count shall not exceed 200/100 ml as a 30-day
geometric mean based on not less than 5 samples during any
30-day period nor exceed 400/100 ml in more than 10% of all
samples during any 30-day period.
Wisconsin	Standards for Recreational Use. A sanitary survey and or
evaluation to assure protection from fecal contamination is
the chief criterion in determining the suitability of a
surface water for recreational use. In addition, the
following bacteriological guidelines are set forth:
The membrane filter fecal coliform count shall not
exceed 200 per 100 ml nor exceed 400 per 100 ml in
more than 10% of all samples during any month.
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Wisconsin
(cont'd)
Intermediate Aquatic Life
Same as standards for recreational use.
Marginal Surface Waters
Same as standards for recreational use.
Wyoming	State established "Basic Water Quality Standards" plus
standards for individual rivers.
Criteria assigned to specific areas: Fecal coliform not to
exceed 200/100 as geometric mean of at least 5 samples, nor
exceed 250/100 in any 1 sample.
During the recreation season (May 1 through September 30),
wastes attributable to or influenced by the activities of
man shall not be present in amounts which will cause fecal
coliform concentrations to exceed a geometric mean of 200
fecal coliform groups per 100 milliliters (based on a
minimum of not less than 5 samples obtained during separate
24-hour periods for any 30-day period), nor shall 10%
of the samples exceed 400 groups per 100 milliliters during
any 30-day period in the waters which have been identified
as being suitable for full body contact recreation.
•U.S. GOVERNMENT PRINTING OFFICE: 1960 Ml-132/6 1-3
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