EPA-520/9-74-024
A GUIDE TO THE INTERSTATE
CARRIER WATER SUPPLY
CERTIFICATION
PROGRAM
ENVIRONMENTAL PROTECTION AGENCY
WATER SUPPLY DIVISION
-------
A GUIDE TO THE INTERSTATE CARRIER WATER
SUPPLY CERTIFICATION PROGRAM
ENVIRONMENTAL PROTECTION AGENCY
Water Supply Division
~Q A T5 V
ivllIV I
U. S. ENVlRGK.-lErtTAL PROTECTION l\
EDISON, fi J. CSol?
-------
PREFACE
The Environmental Protection Agency is responsible for
certifying water supplies serving interstate carriers. Federal
authority for certifying water supplies comes from the Interstate
Quarantine Regulations to prevent the spread of communicable
disease. To accomplish this goal, the Public Health Service Drinking
Water Standards - 1962, were adopted.
A Guide to the Interstate Carrier Water Supply Certification
Program was written June 21, 1971, to aid in the interpretation of
the Drinking Water Standards. This Guide was accepted by the EPA
Regions. Since then, however, modifications have occurred in the
EPA organizational structure, the interpretation of the Standards,
and the EPA reporting forms. This revised Guide reflects the
modifications and replaces the 1971 Guide.
The revised Guide to the Interstate Carrier Water Supply
Certification Program has been prepared by the EPA Water Supply
Division Headquarters and includes those revisions from the EPA
Regions. A reduction in the size of the manual was found desirable
to be compatible with the size of other EPA water supply manuals.
I hope this manual aids in the interpretation of the Drinking Water
Standards for those responsible for ensuring potable water for
interstate travelers.
James H. McDermott, Director
Water Supply Division
June 1975
ill
-------
CONTENTS
Introduction 1
SECTION I Classifications
1.1 Bases for Classification 2
1.1.1 Quality 2
1.1.2 Bacteriological Monitoring 2
1.1.3 Reliability ' 2
1.2 Classification List 2
1.2.1 Information Listed 2
1 2.2 Initial Listing 2
1.2.3 Deletions from the List 3
1.3 Classification Definitions 3
1.3.1 Approved 3
1 3.2 Provisionally Approved 3
1.3.3 Use Prohibited 4
SECTION II Classification Criteria
2.1 Approved 4
2.1.1 Quality 4
2.1.2 Bacteriological Monitoring 4
2.1.3 Reliability 4
2.2 Provisionally Approved 4
2.2.1 Quality 4
2.2.2 Bacteriological Monitoring 4
2.2.3 Reliability 4
2.2.4 No current report 5
2.3 Use Prohibited
2.3.1 Quality 5
2.3.2 Bacteriological Monitoring 5
2.3.3 Reliability 5
2.4 Data Used for Classification 5
2.4.1 Chemical Data 5
2.4.2 Bacteriological Data 5
2.4.3 Reliability 6
SECTION 111 Water Supply Surveys
3.1 Joint Surveys , 6
3.2 Independent Surveys by ROW 6
SECTION IV Use Prohibited Notifications
4.1 By State 6
4.2 By ROW 6
SECTION V Excerpts from the PHS Drinking Water Standards .... 8
SECTION VI EPA Form 7500-12. Report of Water Supply Used
on Interstate Carriers 16
-------
INTRODUCTION
The certification of water supplies for interstate carrier use is the
responsibility of the Environmental Protection Agency, Regional
Water Supply Division (ROW). Authority for the interstate carrier
activities is contained in Public Health Service Act, PL 78-410, Sec.
361, as amended (42 U.S.C. 264), and the Public Health Service
Regulations, as transferred to the Environmental Protection Agency
under Reorganization Plan No. 3 (July 1970).
Three safe-for-use certifications are necessary for water to be
used aboard an interstate carrier. The watering point must be
certified by the Interstate Travel Sanitation Program, Special
Programs Branch, Food and Drug Administration, HEW. The water
supply serving each watering point must be certified by the ROW,
and the bacteriological laboratory serving each water supply must
be certified by the ROW or the properly designated state agency.
A list of water supplies to be inspected, reported on, and
classified will be compiled by ROW from information provided by
FDA. The list will include all water supplies serving watering points
providing potable water to conveyances operated by interstate
carriers, to catering establishments, and to interstate conveyance
servicing areas and all water supplies which have been proposed for
such use on an emergency or permanent basis by interstate carriers
through FDA.
Each water supply will be listed only once regardless of the
number of watering points or servicing areas served or the number
of political jurisdictions served. Where two or more supplies are
interconnected for emergency use, but are not normally operated as
an integrated system and only one serves watering points or
servicing areas, only the supply actually providing the service will be
considered. The other interconnected supply(ies) and the
interconnection(s) must be approved by the State.
State water supply regulatory agencies assist voluntarily in the
annual classification of interstate carrier water supplies.
Participating States will recommend a classification to the ROW
which classifies the supply.
The State water supply regulatory agencies should submit (1) Form
7500-12 reports on water supply systems at least once a year and re-
ports on bacteriological laboratory certification to the ROW, and (2)
reports on watering points, catering establishments, etc., to the Inter-
state Travel Sanitation Program, Special Programs Branch, Food and
Drug Administration.
This guide establishes the criteria and procedures to be used in
classifying interstate carrier water supplies. Users of the guide
-------
should contact the ROW, when questions arise regarding definition
or the application of the policies established herein. For
convenience and brevity, the following abbreviations will be used:
(a) PHS —Public Health Service, Department of Health,
Education, and Welfare
(b) WSD —Water Supply Division, Environmental Protec-
tion Agency
(c) ROW —The Regional Office, WSD
(d) DWS —PHS Drinking Water Standards, 1962 (PHS
Publication 956)
(e) State —The State water supply regulatory agency
d) FDA —Interstate Travel Sanitation Program, Special
Programs Branch, Food and Drug Adminis-
tration
(8) Form 7500-12 — Standard EPA Form 7500-12: Report of Water
Supply Used on Interstate Carriers
SECTION I Classifications.
1.1 Basis for Classification. Each water supply will be classified
as approved, provisionally approved, or use prohibited based
upon:
1.1.1 Quality. Water quality as compared to the DWS
1.1.2 Bacteriological Monitoring. Monitoring will be
judged by laboratory certification and the frequency of
sampling as compared to the DWS. The series of daily check
samples required by Section 3.21, 3.22, or 3.23 DWS will be
considered terminated with the second consecutive negative
sample. Subsequent samples from that sampling point will be
counted as routine samples for the record.
1.1.3 Reliability. Reliability will be an evaluation of the
ability of the facility and the operation of the facility to
continuously produce adequate quantities of safe and
potable water.
1.2 Classification List.
1.2.1 Information listed. Data received from the States or
developed by ROW will be used to prepare a classification
list of water supplies. The listing will include the name of the
water supply, population served, classification, date of the last
joint survey, date of the latest Form 7500-12, and the month
and year of the last reported bacteriological data.
The classification list will be published semiannually by
WSD for the entire United States and reflect the
classifications recorded as of January 1 and July 1. Copies
of the classification list for any State may be obtained from
the ROW having jurisdiction.
1.2.2 Initial Listing. For its initial listing as an interstate
carrier water supply, a supply may be either Approved or
Provisionally Approved for use. A supply mav be classified
— 9 —
-------
"Approved" if past records indicate bacteriological sampling
program and quality have consistently met the DWS and
that facilities and operations are capable of providing safe
water. A supply may be classified "Provisionally Approved"
if the facilities and sampling program are satisfactory and it
is committed to a bacteriological sampling program that will
comply with the DWS. The water quality, as indicated by a
minimum record of three months, must meet the
requirements of the DWS.
1.2.3 Deletions from the List.
Water supplies will be removed routinely from the list by
ROW upon notification from FDA that it no longer serves
an interstate carrier water point.
1.3 Classijication Definitions
1.3.1 Approved. An Approved classification indicates
the quality of the water produced meets the DWS and the
supply has been judged to have a high degree of reliability
for serving water of safe quality to the public. It does not
mean the system is necessarily free from all defects. When
assigned, the classification will be valid until the end of the
18th month following the last month of bacteriological
record reported to the ROW, unless later information
indicates a lower classification is justified.
1.3.2 Provisionally Approved. A Provisionally
Approved classification means the water supply-has been
judged capable of serving water of safe quality to the public
but that:
(a) water of less than satisfactory quality is being
served the public and/or,
(b) inadequate bacteriological monitoring is being
provided and/or.
(c) deficiencies in the facilities or operation of the
water supply have been detected which compromise its
reliability to consistently deliver water of safe quality
and/or,
(d) bacteriological records furnished to ROW by the
State are not up-to-date and the water quality is not fully
known.
The Provisionally Approved classification may be assigned
to a water supply repeatedly. This classification will have an
expiration date not later than 1 2 months following the last
month of bacteriological record reported to the ROW at the
time the classification was assigned. The reason for a
Provisionally Approved classification will be indicated by
• inclusion of the word or words "quality," "bacteriological
monitoring," "facility," "operation," and/or "no current
-- 3 -
-------
report" in parentheses following the words "Provisionally
Approved."
1.3.3 Use Prohibited. A Use Prohibited classification
means the water supply is not considered capable of
consistently delivering safe quality water and that interstate
carriers may not use the water supply.
SECTION II Classification Criteria.
2.1 Approved. Assigned to water systems whose water quality,
bacteriological monitoring, and reliability are judged to be
satisfactory as follows:
2.1.1 Quality. Water quality that meets all the limits set
forth in Sections 3.2, 4.2, 5.21, 5.22, 5.23 and 6.2 of the
DWS, except the supply may be approved when the
standards for not more than 3 of color, odor, chloride, iron,
manganese, sulfate, or total dissolved solids are not met.
2.1.2 Bacteriological Monitoring. Complies with the
sampling rates of Section 3.1 of the DWS at least 11 months
of every 12 month period.
2.1.3 Reliability. A water supply may be considered
reliable and have minimal risk of failure to continuously
provide potable water if it has an adequate, well-protected,
good quality source; treatment facilities adequate for the
quality of the raw water and for the quantities required by
maximum demands; trained certified operators and
maintenance personnel who do their work properly; and a
good distribution system free from hazards such as
cross-connections, areas of low pressure, and improperly
protected distribution reservoirs.
The Manual for Evaluating Public Drinking Water Supplies
(Formerly PHS Publication No. 1.820), and official state
criteria should be used to evaluate reliability.
2.2 Provisionally Approved.
2.2.1 Quality. Water quality that fails to comply with
Section 3.2 of the DWS for one month during the 12-month
reporting period or fails to meet the limits for turbidity,
ABS, arsenic, copper, CCE, cyanide, fluoride, nitrate,
phenol, or zinc, or fails to meet the standards for 4 or more
of color, odor, chloride, iron, manganese, sulfate or total
dissolved solids. The limits for arsenic, cyanide, and fluoride
are those in Section 5.21, DWS.
2.2.2 Bacteriological Monitoring. Failure to comply
with the sampling rate of Section 3.1 of the DWS for 2 or
more months during the 1 2 month reporting period.
2.2.3 Reliability. Water supply having inadequate,
antiquated, or overloaded facilities; or whose operating may
result in intermediate or high risk as judged by the State
-4-
-------
and/or the ROW. Reliability is specified in Sec. 2, of the
DWS.
2.2.4 No Current Report. If no current Form 7500-12 has
been submitted to ROW by the State begining the 19th month
following the last month of bacteriological record Approved
classifications will be reduced to Provisionally Approved (no
current report), and Provisionally Approved ( ) classifi-
cations will be considered Provisionally Approved ( ) + (no
current report).
2.3 Use Prohibited.
2.3.1 Quality. Water quality that fails to comply with
Section 3.2 of the DWS for two or more months during any
12 month reporting period or failure to meet one or more
of the limits set forth in Section 5.22, 5.23, and 6.2 of the
DWS.
2.3.2 Bacteriological Monitoring. Failure to obtain at
least 50% of the number of samples specified by Section 3.1
of the DWS for 3 months of any 12 month period.
2.3.3 Reliability. Failure to maintain a safe water
supply, as specified in Sec. 2, of the DWS.
2.4 Data Used for Classification.
2.4.1 Chemical Data. A complete chemical analysis of a
sample of each water supply's finished water should be
made at the frequency provided in the DWS. When data
show, the water quality is variable and may approach
undesirable or unacceptable limits, complete chemical
analyses should be made more often.
2.4.2 Bacteriological Data. Successive reports to ROW on
Form 7500-12 should provide a continuous bacteriological rec-
ord. When the report interval is less than 12 months, there is
no need to report the overlapping months on the second re-
port. Where the report period is greater than 12 months, extra
report forms should be used to provide data for the extra
months. Bacteriological compliance with Section 3.2 of the
DWS will be evaluated on individual monthly basis, not on a
monthly average for the year basis. To meet the provisions
of this section of this guide, a summary of bacteriological
sample results for each water system must be provided to
the water supply sectio'n of the State on at least a monthly
basis for review. Each month the provisions of this guide
are not met, the State must immediately notify the ROW
by telephone with confirmation in writing.
Bacteriological examinations should be made in
laboratories certified at least triennially by ROW and/or by
a State laboratory survey officer approved by ROW.
- 5 -
-------
2.4.3 Reliability. Appraisals of the source, treatment
plant facilities, distribution system adequacy and
protection, and quality of operation, must be made
periodically by the State and ROW. The inspecting engineer
should be satisfied that the cross-connection control
exercised is commensurate to the risks. The State should
visit each supply at least once each year to make an
engineering evaluation and recommend a classification to
the ROW.
SECTION III Water Supply Surveys.
3.1 Joint Surveys. Joint surveys will be made through the
mutual agreement of the State and ROW. Normally, reports of
the joint surveys will be prepared by ROW personnel for WSD
information and copies will be sent to the State. The ROW
may prepare a formal report; a report will not be prepared
jointly except at the request of the State. Copies of all ROW
reports will be provided to the State to be forwarded to the
supply manager.
3.2 Independent Surveys by ROW. If a current report has not
been received by the end of the 18th month following the last
month of bacteriological record reported to ROW, the ROW
will request a joint survey. Where not mutual agreement
regarding joint surveys can be reached, independent surveys by
the ROW may be made. The State will be notified when the
survey will be made and will be invited to participate. Copies
of written reports will be sent to the State.
SECTION IV Use Prohibited Notifications.
4.1 By State. When a water supply is determined to merit Use
Prohibited classification (1) because of failure to collect a
sufficient number of bacteriological samples or failure to meet
bacteriological and/or mandatory chemical limits, (2) because
of a natural disaster such as flood, fire, hurricane, or
earthquake, or (3) when the State has issued a "boil water" in
order, the State should notify the ROW by the most
expeditious means, preferably by telephone, which should be
followed by written confirmation.
4.2 By ROW. In the event a water supply is classified Use
Prohibited by the ROW for any reason, including the
occurrence of a natural disaster, or such classification is
recommended by the State, the ROW will notify the Regional
Representative of FDA and the water supply manager of the
classification by the most expeditious means, the ROW will
also notify the Director, WSD, and the State of this action.
The Regional Representative of FDA will be responsible for
the notification of carrier companies and such notification
- 6 -
-------
should not be undertaken by the ROW, except as he may be
requested to do so by the FDA representative.
The WSD notification should be confirmed in writing with copies
sent to the FDA Regional Representative, the State, the water
supply manager, the Director of WSD, and the Chief of the
Surveillance and Technical Assistance Branch, WSD.
7 -
-------
SECTION V
EXCERPTS FROM THE
PHS DRINKING WATER STANDARDS
(PHS PUBLICATION 956)
for use with
"A GUIDE TO THE INTERSTATE CARRIER
WATER SUPPLY CERTIFICATION PROGRAM-
ENVIRONMENTAL PROTECTION AGENCY
Water Supply Division
2. SOURCE AND PROTECTION
2.1 The water supply should be obtained from the most
desirable source which is feasible, and effort should be made to
prevent or control pollution of the source. If the source is not
adequately protected by natural means, the supply shall be
adequately protected by treatment.
2.2 Frequent sanitary surveys shall be made of the water
supply system to locate and identify health hazards which might
exist in the system. The manner and frequency of making these
surveys, and the rate at which discovered health hazards are to be
removed, shall be in accordance with a program approved by the
Reporting Agency and the Certifying Authority.
2.3 Approval of water supplies shall be dependent in part
upon:
(a) Enforcement of rules and regulations to prevent
development of health hazards;
(b) Adequate protection of the water quality
throughout all parts of the system, as demonstrated by
frequent surveys;
(c) Proper operation of the water supply system
under the responsible charge of personnel whose
qualifications are acceptable to the Reporting Agency
and the Certifying Authority;
(d) Adequate capacity to meet peak demands
without development of low pressures or other health
hazards; and
(e) Record of laboratory examination showing
consistent compliance with the water quality
requirements of these Standards.
-8 -
-------
2.4 For the purpose of application of these Standards,
responsibility for the conditions in the water supply system shall be
considered to be held by:
(a) The water purveyor from the source of supply to
the connection to the customer's service piping; and
(b) The owner of the property served and the mu-
nicipal, county, or other authority having 4egal juris-
diction from the point of connection to the customer's
service piping to the free-flowing outlet of the ultimate
consumer.
3. BACTERIOLOGICAL QUALITY
3.1 Sampling.
3.11 Compliance with the bacteriological requirements of
these Standards shall be based on examinations of samples
collected at representative points throughout the distribution
system. The frequency of sampling and the location of
sampling points shall be established jointly by the Reporting
Agency and the Certifying Authority after investigation by
either agency, or both, of the source, method of treatment,
and protection of the water concerned.
3.1?, The minimum number of samples to be collected
from the distribution system and examined each month should
be in accordance with the number on the graph in Figure I, for
the population served by the system. For the purpose of
uniformity and simplicity in application, the number
determined from the graph should be in accordance with the
following: for a population of 25,000 and under-to the nearest
1; 25,002 to 100,000-to the nearest 5; and cover 100,000-to
the nearest 10.
3.13 In determing the number of samples examined
monthly, the following samples may be included, provided all
results are assembled and available for inspection and the
laboratory methods and technical competence of the
laboratory personnel are approved by the Reporting Agency
and the Certifying Authority:
(a) Samples examined by the Reporting Agency.
(b) Samples examined by local government
laboratories.
(c) Samples examined by the water works authority.
(d) Samples examined by commercial laboratories
3.14 The laboratories in which these examinations are
made and the methods used in making them shall be subject to
inspection at any time by the designated representatives of the
Certifying Authority and the Reporting Agency. Compliance
with the specified procedures and the results obtained shall be
used as a basis for certification of the supply.
-9-
-------
1,000
MINIMUM NUMBER OF SAMPLES PER MONTH
t\J 01 -o- U-, O <= g
10,000
° 100,000
1,000,000
10,000,000
\
Figure I
3.15 Daily samples collected following a bacteriologically
unsatisfactory sample as provided in section 3.21, 3.22, and
3.23 shall be considered as special samples and shall not be
included in the total number of samples examined. Neither
shall such special samples be used as a basis for prohibiting the
supply, provided that: (1) When waters of unknown quality
are being examined, simultaneous tests are made on multiple
portions of a geometric series to determine a definitive
coliform content; (2) Immediate and active efforts are made to
- 10-
-------
locate the cause of pollution; (3) Immediate action is taken to
eliminate the cause; and (4) Samples taken following such
remedial action are satisfactory.
3.2 Limits. The presence of organisms of the coliform group
as indicated by samples examined shall not exceed the following
limits:
3.21 When 10 ml standard portions are examined, not
more than 10 percent in any month shall show the presence of
the coliform group. The presence of the coliform group in
three or more 10 ml portions of a standard sample shall not be
allowable if this occurs:
(a) In two consecutive samples;
(b) In more than one sample per month when less
than 20 are examined per month; or
(c) In more than 5 percent of the samples when 20
or more are examined per month.
When organisms of the coliform group occur in 3 or more
of the 10 ml portions of a single standard sample, daily
samples from the same sampling point shall be collected
promptly and examined until the results obtained from ai least
two consecutive samples show the water to be of satisfactory
quality.
3.22 When 100 ml standard portions are examined, i >t
more than 60 percent in any month shall show the presence i
the coliform group. The presence of the coliform group in -il
five of the 100 ml portions of a standard sample shall not be
allowable if this occurs:
(a) In two consecutive samples;
(b) In more than one sample per month when less
than five are examined per month; or
(c) In more than 20 percent of the samples when five
or more are examined per month.
When organisms of the coliform group occur in all five of
the 100 ml portions of a single standard sample, daily samples
from the same sampling point shall be collected promptly and
examined until the results obtained from at least two
consecutive samples show the water to be of satisfactory
quality.
3.23 When the membrane filter technique is used, the
arithmetic mean coliform density of all standard samples
examined per month shall not exceed one per 100 ml.
Coliform colonies per standard sample shall not exceed 3/50
ml. 4/100 ml, 7/200 ml, or 13/500 ml in:
(a) Two consecutive samples;
(b) More than one standard sample when less than 20
are examined per month; or
- 11 -
-------
(c) More than five percent of the standard samples
when 20 or more are examined per month.
When coliform colonies in a single standard sample exceed
the above values, daily samples from the same sampling point
shall be collected promptly and examined until the results
obtained from at least two consecutive samples show the water
to be of satisfactory quality.
4. PHYSICAL CHARACTERISTICS
4.1 Sampling. The frequency and manner of sampling shall be
determined by the Reporting Agency and the Certifying Authority.
Under normal circumstances samples should be collected one or
more times per week from representative points in the distribution
system and examined for turbidity, color, threshold odor, and taste.
A.I Limits. Drinking water should contain no impurity which
would cause offense to the sense of sight, taste, or smell, Under
general use, the following limits should not be exceeded:
Turbidity . 5 units
Color 15 units
Threshold Odor Number 3
5. CHEMICAL CHARACTERISTICS
5.1 Sampling.
5.11 The frequency and manner of sampling shall be
determined by the Reporting Agency and the Certifying
Authority. Under normal circumstances, analyses for
substances listed below need be made only semiannually. If,
however, there is some presumption of unfitness because of
the presence of undesirable elements, compounds, or
materials, periodic determinations for the suspected toxicant
or material, should be made more frequently and an
exhaustive sanitary survey should be made to determine the
source of the pollution. Where the concentration of a
substance is not expected to increase in processing and
distribution, available and acceptable source water analyses
performed in accordance with standard methods may be used
as evidence of compliance with these Standards.
5.12 Where experience, examination, and available
evidence indicate that particular substances are consistently
absent from a water supply or below levels of concern,
semiannual examinations for those substances may be omitted
when approved by the Reporting Agency and the Certifying
Authority.
5.13 The burden of analysis may be reduced in many
cases by using data from acceptable sources. Judgment
concerning the quality of water supply and the need for
performing specific local analyses may depend in part on
- 12 -
-------
information produced by such agencies as: (1) The U.S.
Geological Survey, which determines chemical quality of
surface and ground waters of the United States and publishes
these dat: in "Water Supply Papers" and other reports, and (2)
The U.S. Public Health Service which determines water quality
related to pollution (or the absence of pollution) in the
principal rivers of the Nation and publishes these data annually
in "National Water Quality Network." Data on pollution of
waters as measured by carbon chloroform extracts (CCE) may
be found in the latter publication.
5.2 Limits. Drinking water shall not contain impurities in
concentrations which may be hazardous to the health of the
consumers. It should not be excessively corrosive to the water
supply system. Substances used in its treatment shall not remain in
the water in concentrations greater than required by good practice.
Substances which may have deleterious physiological effect, or for
which physiological effects are not known, shall not be introduced
into the system in a manner which would permit them to reach the
consumer.
5.21 The following chemical substances should not be
present in a water supply in excess of the listed concentrations
where, in the judgment of the Reporting Agency and the
Certifying Authority, other more suitable supplies are or can
be made available.
Concentration
Substance in mg/1
Alkyl Benzene Sulfonate (ABS) 0.5
Arsenic (As) 0 01
Chloride (Cl) 250.
Copper (Cu) 1.
Carbon Chloroform Extract (CCE) 0.2
Cyanide (CN) 0.01
Fluoride (F) (See 5.23)
Iron (Fe) 0.3
Manganese (Mn) 0 05
Nitrate ' (No3) 45
Phenols 0.001
Sulfate (SO4) 250.
Total Dissolved Solids 500.
Zinc (Zn) 5.
In areas in which the nitrate content of water is known to be in excess of the listed
concentration, the public should be warned of the potential dangers of usine the water for
infant feeding.
5.22 The presence of the following substances in excess of
the concentrations listed shall constitute grounds for rejection
of the supply:
Concentration
Substance w mg/,
Arsenic (As) 0.05
- 13 -
-------
Barium (Ba)
Cadmium (Cd)
Chromium (Hexavalent) (Cr
Cyanide (CN)
Fluoride (F)
Lead (Pb)
1.0
0.01
0.05
0.2
(See 5.23)
0.05
0.01
0.05
Selenium (Se)
Silver (Ag)
5.23 Fluoride When fluoride is naturally present in
drinking water, the concentration should not average more
than the appropriate upper limit in Table I. Presence of
fluoride in average concentrations greater than two times the
optium values in Table 1 shall constitute grounds for rejection
of the supply.
Where fluoridation (supplementation of fluoride in drinking
water) is practiced, (he average fluoride concentration shall be
kept within the upper and lower control limits in Table I.
TABLE 1.
Annual average of maximum daily air temperatures
50.0-53.7
53.8-58.3
58.4-63.8
63.9-70.6
1 Q.I -19. 2
79.3-90.5
Recommended control limits-
Fluoride concentrations in mg/1
Lower
0.9
0.8
0.8
0.7
0.7
0.6
Optimum
1.2
1.1
1.0
0.9
0.8
0.7
Upper
1.7
1.5
1.3
1.2
1.0
0.8
Based on temperature data obtained for a minimum of five years.
In addition to the sampling required by paragraph 5.1
above, fluoridate and defluoridate supplies shall be sampled
with sufficient frequency to determine that the desired
fluoride concentration is maintained.
6. RADIOACTIVITY
6.1
Sampling.
6.11 The frequency of sampling and analysis for
radioactivity shall be determined by the Reporting Agency and
the Certifying Authority after consideration of the likelihood
of significant amounts being present. Where concentrations of
Ra226 or Sr90 may vary considerably, quarterly samples
composited over a period of three months are recommended.
Samples for determination of gross activity should be taken
and analyzed more frequently.
6.12 As indicated in paragraph 5.1, data from acceptable
sources may be used to indicate compliance with these
requirements.
- 14 -
-------
6.2 Limits.
6.21 The effects of human radiation exposure are viewed
as harmful and any unnecessary exposure to ionizing radiation
should be avoided. Approval of water supplies containing
radioactive materials shall be based upon the judgment that
the radioactivity intake from such water supplies when added
to that from all other sources is not likely to result in an
intake greater than the radiation protection guidance 2
recommended by the Federal Radiation Council and approved
by the President. Water supplies shall be approved without
further consideration of other sources of radioactivity intake
of Radium-226 and Strontium-90 when the water contains
these substances in amounts not exceeding 3 and 10 ^^c/liter,
respectively. When these concentrations are exceeded, a water
supply shall be approved by the certifying authority if
surveillance of total intakes of radioactivity from all sources
indicates that such intakes are within the limits recommended
by the Federal Radiation Council for control action.
6.22 In the known absence 3 of Strontium-90 and alpha
emitters, the water supply is acceptable when the gross beta
concentrations do not exceed 1,000/u,uc/liter. Gross beta
concentrations in excess of 1,000 ^c'/liter shall be grounds for
rejection of supply except when more complete analyses
indicates that concentrations of nuclides are not likely to
cause exposures greater than the Radiation Protection Guides
as approved by the President on recommendation of the
Federal Radiation Council.
-------
SECTION VI
EPA FORM 7500-12
REPORT OF WATER SUPPLY USED ON INTERSTATE CARRIERS
.Government Printing Office: 1973 — 759-907/1132 Region 5-1
-16-
-------
U.S. ENVIRONMENTAL PROTECTION AGENCY
REPORT OF WATER SUPPLY USED ON INTERSTATE CARRIERS
For use of EPA Regional Office
j 1. Name of water supply facility
I
Location
2 Water Supply Official Contacted f/Vame and Title,
3. Date of latest field
survey made by state
i 4 Date of latest
! ERA-STATE Joint Survey
5. Population servec
by distribution system
1
\ \ \
6 OWNERSHIP
1-Pubhc j I
7 NUMBER OF SOURCES
QSUM.C. Q Ground
|_| Purchased (,_,
8. Treatment used (1=Yes, 2-No)
D °"""«""°" D
ul.tion Rap.d Sand | j
Q ton Exchange Q Settling Q
D
9 Local Water Supply Program (t=Yes, 2-No)
j I A. Does the community have an adequate plumbing code, such as the National Plumbing Code, or are there rules and regulations
to prohibit cross-connections7
n to detect health hazards and sanitary defects within the water
I j B Is there a continuous cross-connection control progra
distribution system7
I 1 C If there is a program such as described in 'B ' above are sanitary defects and health hazards being removed systematically
and at a rate which is satisfactory'
I I D Is a minimum working pressure of 20 psi continuously maintained in all parts of the distribution system7
I E Are all distribution reservoirs covered7
DF Is the water flowing from all uncovered reservoirs to the distribution system rechlormated7 (A free chlorine residual of 0 4 mg/l
for 30 minutes or a chloramme residual of 2 0 mg/1 for 2 hours prior to delivery to the first customer )
I [ G Are the principal plant operators certified or licensed under a state program7
10 Result of most recent analyses (A blank indicates no report) Sample
Date of most recent
Analyses
i
How often are chemical analyses made7
CHEMICAL (MG/Ll
_[(Titrate
-------
BACTERIOLOGICAL EXAMINATIONS
Minimum Number of
Samples Required
Per Month ©
Name
Bacte
of Laboratory Submitting
riological Data
Opr
By
D
n
U
Cert
Bv
n
n
U
TUBE METHOD
.1ONTH
AND
YEAR
0. YH.
NUMBER
OF
SAMPLES
I
n 10 ML OH
' 1 '
! '
NUMBER
OF
TUBES
U
-L-
-r
G 100 ML STANDARD PORTIONS
NUMBER
POSITIVE
TUBES ^
—
POSITIVE
TUBES @
*
Q. T»
•
< •
(
i •
1 *
^r
*
! i* '
i !»!
SAMPLES HAVING
3 or MORE 10 ML
OR 5 100 ML.
TUBES POSITIVE ®
NUMBER
i 1 L
% POSITIVE
'
I
~ i
•
>
r
•
•
(
— hi-
j_-L '£_
Ce
MO
m
m
Date of
rtificat.un
DAY YR
m m
mm
Laboratory Operated Bv
1 - State
2 - Water Supply
3 - Local Health
4 - Private
5 — Other
Certified by
1 - State
2 - EPA
3 - Not Certified
MEMBRANE FILTER METHOD
MONTH
AND
YEAH
MO
J
]
YH
-
-
NUMBER
OF
SAMPLES
:
-i —
1
1
•
;
MEAN
COL FORM
DENSITY
PER
100 ML (D
— I
•
•I
•1
^ -
•|
•
'•I
SAMPLES HAVING
COLIFORM DENSI-
TIES EXCEEDING
3/50, 4/100, 7/200,
13/500 MLS ,£j
NUMBER
i |
[
T
---
4.
•
[
% POS
T]
T"
ITIVE
•
•l
•|
•
•
•
•
•
v
12 Comments, changes in supply and treatment, deficiencies i use additional sheet if necessary ]
CLASSIFICATION RECOMMENDED BY (Name and Tula] [AGENCY
CLASSIFICATIONS
1 - Approved
2 — Provisionally Approved
3 - Prohibited
4 - Deleted
CLASSIFICATION
RECOMMENDED f~J
CLASSIFICATION
ASSIGNED
BY EPA
The reasons for provisionally approved or prohibited are deficiencies in (Answer each block
j DATE
D
(1 = Yes
EXPIRAT
MO.
rr
2 ~ No)
MO DAY YR
m LCI r~^
ON DATE H* provisional^ appr
DAY YR.
1 T~~l 1 1 1
I 1
I I Water Quality |j Beet Momtor.ng | | Facilities | j Operation | ] No < ur.ent report
DATE OF REVIEW
MO DAY YH.
SIGNATURE OF STATE OFFICIAL
TITLE AND AGENCY.
See Figure 1. PHS Drinking Water Standards [19621
Should not exceed 10% per month, if 10 ml portions are used, or 60% if 100 r
The arithmetic means density of all standard sample
iot exceed 1 per 100 n
-------
ENVIRONMENTAL PROTECTION AGENCY
I!KCI()M I Coimc< licul. Maine.
Massai husells. New I lampshirc,
Khode Island, \ ermonl
John I'. Kennedy Federal Building
Boston, Mas-,. 0220:!
Kl',v^ Vork, \.V. 10007
l!K,(;i()N III Delaware, Dihtricl
ol (^olii inhi.i. Maryland, I'enn-
sylvaniu, Virginia, \\cst Virginia
Curtis lildfi., 6th
------- |