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WATER QUALITY STANDARDS CRITERIA DIGEST
A COMPILATION OF FEDERAL/STATE CRITERIA ON
-DISSOLVED SOLIDS-
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ENVIRONMENTAL PROTECTION AGENCY
WASHINGTON, D.C.
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INTRODUCTION
This digest was compiled in order to provide general information to the
public as well as to Federal, State, and local officials. It contains excerpts
from the individual Federal-State water quality standards establishing dissolved
solids criteria for interstate waters. The water quality standards program is
directed by the Environmental Protection Agency, an independent regulatory agency
which has responsibility for approving State-adopted standards for interstate
waters,evaluating adherence to the standards, and overseeing enforcement of stan-
dards compliance.
Standards, the first nationwide strategy for water quality management, contain
four major elements: the use (recreation, drinking water, fish and wildlife
propagation, industrial, or agricultural) to be made of the interstate water;
criteria to protect those uses; implementation plans (for needed industrial-
municipal waste treatment improvements, among others) and enforcement plans; and
an antidegradation statement to protect existing high quality waters.
Minimum water quality criteria, or numerical specifications of physical,
chemical, temperature, and biological levels, are stated in the National Technical
Advisory Committee report to the Secretary of the Interior, Water Quality Criteria,
dated April 1, 1968, and published by the Government Printing Office, Washington,
D.C. Unavailability of the NTAC report before June 30, 1967--the date set by the
Water Quality Act of 1965 for formal adoption of State standards--resulted in
significant variations between the state-adopted and the NTAC minimum criteria.
Some standards were adopted and approved before the NTAC report became available.
Also, the Water Quality Criteria report is subject to updating in light of new
scientific and technical information.
Although natural waters contain dissolved solids consisting mainly of
carbonates, biocarbonates, chlorides, sulfates, phosphates, and possibly nitrates
with traces of metallic elements, increases in these substances above normal are
undesirable and sometimes detrimental. Concentrations or effects of these sub-
stances can be raised or synergistically altered by, for example, the addition of
chemical wastes, dissolved salts, acids, alkalis, gas and oil-well brines, or
irrigation drainage. Adverse effects may be unpalatable drinking water, fish kills,
crop damage, or eorrosion damage in water systems.
The Water Quality Criteria report recommends that dissolved solids con-
centrations not exceed 500 mg/1 for drinking water supplies; and for the protection
of freshwater fish, concentrations should not exceed 50 milliosmoles (the equivalent
of 1500 mg/1 NaCl).
Since water quality standards experience revisions and upgrading from time
to time, following procedures set forth in the Federal Water Pollution Control Act,
individual entries in this digest may be superseded. As these revisions are
accomplished, this digest will be updated and reissued. Because this publication
is not intended for use other than as a general information resource, for the
latest information, and for special purposes and applications, refer to the existing
approved water quality standards which can be obtained from the State water pollution
control agencies or EPA Washington, D.C. or regional offices.
Individual State-adopted criteria follow:
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KEY
n\'S ' Public Water Supply
n.;c. Recreation
t MVL Fish $ -Wildlife
Ind. Industrial
Agric. Agricultural
Mg/1 Milligrams per Liter
SAR Sodium Absorption Ratio
(For explanation of use classifications, see EPA publication,
"General Stream Use Designations".)
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DISSOLVED SOLIDS
Alabama
Alaska
Arizona
Arkansas
California
No specific requirement found in standards.
Class A-PWS - Total dissolved solids under 500
mg/1. None in addition to natural background
if this value exceeds 500 mg/1.
Class C-Swimming - Numerical value is not applicable.
Class D-F&WL - Within ranges to avoid chronic
toxicity or significant ecological change.
Class E-Shellfish Within ranges to
avoid chronic toxicity or significant
ecological change.
Class F-Agricultural - Conductivity less than 1500
micromhos at 77°F. SAR less than 2.5, sodium per-
centage less than 6070, residual carbonate less than
1.25 mg/1 and boron less than 0.3 mg/1.
Class G-Industrial No amounts above natural
conditions which will cause undue corrosion, scaling,
or process problems.
No specific requirement found in standards.
No specific requirement found in standards.
Bryant Creek Basin - 200 mg/1 maximum
East Fork Carson River A mean annual concentration
less than 110 mg/1, and a maximum concentration
not to exceed 175 mg/1 at any time.
West Walker River and Lake Topaz A mean annual
concentration less than 100 mg/1, and a maximum
concentration not to exceed 170 mg/1 at any time.
East Walker River A mean annual concentration
less than 175 mg/1, and a maximum concentration
not to exceed 300 mg/1 at any time.
West Fork Carson River A mean annual concen-
tration less than 75 mg/1, and a maximum concen-
tration not to exceed 100 mg/1 at any time.
Truckee River - A mean annual concentration less
than 80 mg/1, and a maximum concentration not to
exceed 100 mg/1 at any time.
Lake Tahoe A mean annual conductance not greater
than 105 micromhos per centimeter at 25°C at any
point in the lake.
Alamo River - Wastes discharged towards the river
shall not contain a TDS content in excess of 4000
mg/1 as an average; or in excess of 4500 mg/1
at any time.
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New River - Wastes discharged towards the river
shall not contain a TDS content in excess of
4000 mg/1 as an average; or in excess of 4500 mg/1
at any time.
Tijuana River System (Campo Creek) Median
concentration of 500 mg/1.
Tijuana River System (Cpttonwood_ Creek and Tecate
Creek) - Median concentration of 500 mg/1.
Tijuana River System (Tijuana River) - Maximum
concentration of 2100 mg/1.
Goose Lake - The quantity of TDS in the lake shall
not exceed 1,300,000 tons.
Tidal Waters Inland from the Golden Gate within the
San Francisco Bay Region, East of the Westerly End
of Chipps Island The TDS concentration shall
not exceed 500 mg/1 within 2000 feet of diversions
when tidal waters are used for domestic water supplies.
Smith River - The mean annual conductance of Smith
River waters in California shall not exceed 150
micromhos per cm. at 25°C, and its maximum shall not
exceed 200 micromhos.
B-3 At Terminous in Little Potato Slaugh, at Rio
Vista in the Sacramento River, at San Andreas Landing
in the San Joaquin River, at Clifton Court Ferry in
Old River, and after the initial operation of the
Peripheral Canal, at the bifurcation of Middle
River and Old River,
a. A mean daily total dissolved solids content
of 700 parts per million or less when
measured on the basis of the average
daily value for any 10 consecutive days,
b. A mean monthly total dissolved solids content
of 500 parts per million or less when
measured on the basis of the average mean daily
value for any calendar month,
c. A mean annual total dissolved solids content
of 450 parts per million or less when measured
on the basis of the average mean daily value
for any claendar year.
B-4 After April 1 in a dry or critical year and after
August 1 in a below normal year and until December 31
of the same calendar year, the total dissolved
solids criterial specified in Article B, Part 3, may
reach, but not exceed, 800 parts per million for item
a, 600 parts per million for item b, and 500 parts per
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3
million for item c; provided, however, the average
of the values of the total dissolved solids content
at all of the named locations shall not exceed,for the
balance of the calendar year, the mean values spe-
cified in Article B, Part 3.
Whenever the recorded total dissolved solids content
in the Sacramento River at Green's Landing exceeds
a mean 10-day or a mean monthly value of 150 parts
per million, the quality criteria in Article B,
Parts 3 and 4, may be changed by adding to those values
the product of 1-1/2 times the amount by which the
recorded total dissolved solids content at green's
Landing exceeds 150.
Total Dissolved Solids (TDS) concentration of
Delta Waters shall be maintained below these limits:
Old River at Clifton Court Ferry;
Calendar year, Annual Average 450 mg/L
Calendar month, Average 600 mg/L
Daily, Average 800 mg/L
5-year Averate 400 mg/L
Cache Slough at City of Vallejo Intake: 250 mg/L
Rock Slough at Contra Costa Canal Intake;
A. 750 mg/L, mean tidal sycle value, and
B. 380 mg/L, mean tidal cycle value, for at least
657o of any year.
San Joaquin River near Vernalis; 500 mg/L average
concentration over any consecutive 30-day period.
Eastern Delta Channels; 700 mg/L mean monthly con-
centration.
Lost River The mean annual conductance of the Lost
River system measured at its outlet in the Klamath
Straits Drain at Stateline Road shall not exceed 850
micromhos per cm. at 25°C, nor should the maximum
conductance exceed 1000 micromhos.
Klamath River - The mean annual conductance in the
mainstem of the Klamath Riverupstream of its conflu-
ence with the Salmon River, shall not exceed 300
micromhos per cm. at 25°C. and its maximum con-
ductance shall not exceed 400 micromhos. Mean
annual conductance of the Klamath River downstream
of its confluence with the Salmon River shall not
exceed 200 micromhos per cm. at 25°C., and its
maximum shall not exceed 300 micromhos.
Coastal Waters
Standards for various coastal waters
contain narrative statements that limit
changes in dissolved solids.
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Colorado
Class A PWS - Total dissolved solids, annual
volume weighted average, should be less than 500
mg/1.
Class B & C - No specific requirement found in
standards.
Class D - Irrigation Use A time weighted monthly
mean at a monitoring station which exceeds the
time weighted monthly mean for a base period
established by the commission by more than two stan-
dard deviations shall be subject to review by the
commission.
Connecticut
Delaware
No specific requirement found in standards
Shall not exceed 250 mg/1 of which the sulfate
portion shall not be greater than 100 mg/1.
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
This criteria applies only to the Red Clay
Drainage Basin, the White Clay Drainage Basin, the
Brandywine River Drainage Basin, the Christina River
Basin Drainage.
Not to exceed 500 mg/1 as a monthly average or exceed
1000 mg/1 at any time.
No specific requirement found in standards.
Class AA Waters Oceanographic research, propagation
of shellfish and marine life and aesthetics. No
changes in channels, in basin geometry of the area
or in the fresh water influx shall be made which
would cause permanent changes in isohaline patterns
of more than ± 1070 of naturally occuring variations
or which would otherwise affect biological and
sedimentalogical situations. Total dissolved solids
shall not be below 23000 mg/1 from other than natural
causes. No other requirements found for any other
classification.
No specific requirement found in standards.
PWS - 500 mg/1 (Lake Michigan 180 mg/1)
Total dissolved solids - 1000 mg/1
PWS - Other than from naturally occuring sources
not to exceed 500 mg/1 as a monthly average value,
not exceed 750 mg/1 at any time. Values of specific
conductance of 800 and 1200 micromhos/cm (25°C.)
may be considered equivalent to dissolved solids
concentrations of 500 and 750 mg/1. No.specific
requirement found for other uses.
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Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachessetts
No specific requirement found in standards.
No specific requirement found in standards.
PWS - Not to exceed 500 mg/1 as a monthly average
value, nor exceed 750 mg/1 at any time. Values
of specific conductance of 800 and 1200 micromhos
(cm at 25°C) may be considered equivalent to
dissolved solids concentrations of 500 and 750 mg/1,
No specific requirement found for other water uses.
No specific requirement found in standards.
No specific requirement found in standards.
No specific requirement found in standards.
No specific requirement found in standards.
Michigan
Domestic Water Supply For the Great Lakes the
Maximum shall not exceed 200 mg/1.
Chlorides - The monthly average shall not exceed
50 mg/1. A monthly average of 10 mg/1 is a desirable
limit where existing conditions are less than 10 mg/1.
Inland Waters - Total dissolved solids shall not
exceed 500 mg/1 as a monthly average not exceed
750 mg/1 at any time. Chlorides - The monthly
average shall not exceed 125 mg/1.
Industrial Use Total dissolved solids shall not
exceed 500 mg/1 as a monthly average nor exceed
750 mg/1 at any time. Chlorides A monthly average
shall not exceed 125 mg/1.
Primary Contact Recreation Limited to concentrations
less than those which are or may become injurious
to the desginated use.
Partial Body Contact Recreation - Same as Primary.
F&WL Use - Standards to be established when informa-
tion becomes available on deleterious effects.
Agricultural Use - Less than 700 mg/1 dissolved
minerals. Maximum percentage of sodium 407<, as
determined by formula.
Commercial Use - Limited to concentrations less
than those which are or may become injurious to the
designated use.
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Minnesota
Mississippi
PWS Class A Meet 1962 PHS Drinking Water
Standards 500 mg/1.
Ind. Class A 50 mg/1, Hardness; Class B
250 mg/1 hardiess; Class C 500 mg/1
hardness.
PWS There shall be no substances added to the
waters to cause the dissolved solids to exceed
500 mg/1.
Recreation Use - There shall be no substances added
to the waters to cause the dissolved solids to
exceed 750 mg/1 as a monthly average value, nor
exceed 15.00 mg/1 at any time.
F&WL - Same as Recreation.
Agricultural & Industrial Use - Same as Recreation.
Missouri
Montana
Nebraska
Navigation - There shall be no substances added
to the waters to cause the dissolved solids to
exceed 1000 mg/1 as a monthly average value, nor
exceed 2000 mg/1 at any time.
No specific requirement found in standards.
No specific requirement found in standards.
Class A - PWS - A point source discharge shall not
increase the total dissolved solids concentration
of a receiving water by more than 107, and in no
case shall the total dissolved solids of a stream
exceed 600 mg/1. Data regarding specific con-
ductivity will be considered in lieu of TDA data. A
point source discharge shall not increase the
conductivity of the receiving water by more than
107° and in no case shall the conductivity exceed 900
micromhos per centimeter at 25°C.
Class B - Primary Contact Recreation same as class C
Class C - A point source discharge shall not in-
crease the total dissolved solids concentration of
a receiving water by more than 20%, this value
shall not exceed 1007= mg/l, and in no case shall the
total dissolved solids of a stream exceed 1500 mg/1.
data regarding specific conductivity will be consid-
ered in lieu of TDS data. A point source discharge
shall not increase the condutivity of the receiving
water by more than 20%, this value shall not exceed
150 micromhos/centimeter, and in no case shall the
conductivity of the receiving waters exceed 2250
microhms/centimeter at 25°C. For irrigation use the
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Nevada
SAR value and the condutivity shall not be greater
than a C3-52 class irrigation water as shown in Fig,
25 of Agricultural Handbook 60.
West Fork Carson River (HYW 88)
Annual Average Not more than 75 tug/1
Single Value Not more than 100 mg/1
East Fork Carson River
Annual Average Not more than 110 rag/1
Single Average Not more than 175 mg/1
East Carson River (HYW 395)
Annual Average Not more than 120 mg/1
Single Average Not more than 200 mg/1
Carson River (Muller Lane)
Annual Average Not more than 250 mg/1
Single Average Not more than 300 mg/1
(Highway 395)
Annual Average Not more than 275 mg/1
Single Average Not more than 300 mg/1
(New Empire)
Annual Average Not more than 450 mg/1
Single Average Not more than 600 mg/1
(Weeks)
Annual Average
Single Average
Not more than 300 mg/1
Not more than 450 mg/1
Lake Lahontan
Pending further analysis.
West Walker River
Annual Average
Single Average
Not more than 100 mg/1
Not more than 170 mg/1
Topa2 Lake
Annual Average
Single Average
Not more than 100 mg/1
Not more than 170 mg/1
West Walker River (Wellington)
Annual Average Not more than 125 mg/1
Single Average Not more than 175 mg/1
(Above Confluence with E. Walker R.)
Annual Average Not more than 300 mg/1
Single Average Not more than 350 mg/1
East Walker River (State Line)
Annual Averager Not more than 175 mg/1
Single Average Not more than 300 mg/1
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C'erington)
Annual Average Not more than 200 mg/1
Single Average Not more than 300 mg/1
Walker River
Annual Average
Single Average
Chiatovich Creek
Annual Average
Single Average
Leidy Creek
Annual Average
Single Average
Snake Creek
Annual Average
Single Average
Big Goose Creek
Annual Average
Single Average
Salmon Falls Creek
Annual Average
Single Average
Not more than 450 mg/1
Not more than 550 mg/1
Not more than 60 mg/1
Not more than 75 mg/1
Not more than 135 mg/1
Not more than 150 mg/1
Not more than 100 mg/1
Not more than 125 mg/1
Not more than 160 mg/1
Not more than 200 mg/1
Not more than 200 mg/1
Not more than 250 mg/1
Jarbidge River (Upstream from Jarbidge)
Annual Average Not more than 50 mg/1
Single Average Not more than 75 mg/1
(Downstream)
Annual Average Not more than 85 mg/1
Single Average Not more than 125 mg/1
West Fork Bruneau River
Annual Average
Single Average
East Fork Owykee River
Annual Average
Single Average
Not more than 185 mg/1
Not more than 235 mg/1
(South of Owykee)
Not more than 150 mg/1
Not more than 200 mg/1
(State Line)
Annual Average Not more than 200 mg/1
Single Average Not more than 250 -mg/1
South Fork Owykee River
Annual Average
Single Average
Smoke Creek
Annual Average
Single Average
Not more than 210 mg/1
Not more than 250 mg/1
Not more than 225 mg/1
Not more than 275 mg/1
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New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Truckee River (Farad)
Annual Average Not more than 80 mg/1
Single Average Not more than 100 mg/1
(Idlewild)
Annual Average Not more than 100 mg/1
Single Average Not more than 125 mg/1
(Boynton Lane)
Annual Average Not more than 125 mg/1
Single Average Not more than 150 mg/1
(Lagomarsino Bridge)
Annual Average Not more than 150 mg/1
Single Average Not more than 175 mg/1
(Ceresola Ranch)
Annual Average Not more than 250 mg/1
Single Average Not more than 300 mg/1
No specific requirement found in standards.
No specific requirement found in standards.
Has extensive requirements. Refer to Federal-State
standards for New Mexico.
No specific requirement found in standards.
No specific requirement found in standards.
No specific requirement found in standards.
PWS Not to exceed 500 mg/1 as a monthly average
value, nor exceed 750 mg/1 at any time. For Ohio
River water, values of specific conductance of 800
and 1200 micromhos/cm at 25°C. May be considered.
Equivalent to dissolved solids concentrations
of 500 and 750 mg/1.
Industrial Water Supply - Not to exceed 750 mg/1
as a monthly average value, not exceed 1000 mg/1 at
any time. For the Ohio River water, values of
specific conductance of 1200 and 1600 micromhos/cm
at 25°C. May be considered equivalent to dissolved
solids concentrations of 750 and 1000 mg/1.
No specific requirement found for other water uses.
Main stem of Klamath River conductivity 400 micromhos
at 77°F.
Main stem of Willamette River conductivity 100 mg/1
Main stem of ColumbiaRiver conductivity 200 mg/1
Main stem of Grande Ronde River conductivity 200 mg/1
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10
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Main Stem of Walla Walla River
conductivity -200 mg/1.
Main Stem of Snake River conductivity
750 mg/1.
Not to exceed 500 mg/1 as a monthly
average value; not to exceed 750 mg/1
at any time.
No specific requirement found in standards.
No specific requirement found in standards.
PWS 100 mg/1.
Wildlife propagation, 2500 mg/1.
Irrigation, 700 to 1500 mg/1.
PWS Total dissolved solids shall at no
time exceed 500 mg/1.
Industrial Total dissolved solids shall
at no time exceed 500 mg/1.
No specific requirements found for other
water uses.
Canadian River Ba.sin
Canadian River (Oklahoma to Lake Meredith)
3,500 mg/1.
Canadian River (Lake Meredith), 1,000 mg/1.
Canadian River (L. Meredith to New Mexico),
1,500 mg/1.
Wolf Creek, 900 mg/1.
Red River Basin
Red R. To Lake Texoma, 1080 mg/1.
L. Texoma, 1,500 mg/1.
Red R (Above Texoma), 6,000 mg/1.
Prairie Dog Town Fork Red River, 65,000 mg/1
Little Wichita, 700 mg/1.
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Wichita River (Byers to Mabelle) , 5,000
mg/1.
Wichita River (Above Mabelle), 20,000 mg/1
Pease River, 20,000 mg/1.
North Pease River, 20,000 mg/1.
Middle Pease River, 7,000 mg/1.
Salt Fork Red River, 3,000 mg/1.
North Fork Red River, 2,500 mg/1.
Sulphur River Basin
Sulphur River, 400 mg/1.
Sulphur River at Stateline, 1,000 mg/1.
McKinney Bayou (Barkman), 400 mg/1
Sabine River Basin
Sabine Pass (Neches Zone 1), 25,000 mg/1.
Sabine Lake (Neches Zone V), 20,000 mg/1.
Sabine River Tidal, Zone 1, 5,000 mg/1.
Sabine Lake to Morgan's Bluff,5,000 mg/1.
Sabine R., Zone II (Morgan's Bluff),
to Sabine R. Authority Pump Station,
500 mg/1.
Sabine R., Zone III (Sabine R. Authority
Pump Station to Toledo Bend Dam), 300 mg/1.
Sabine River, Zone IV $ V (Toledo Bend
Reservoir), 200 mg/1.
Sabine River, Zone VI (Above Toledo Bend
Reservoir), 200 mg/1.
Cypress Creek Basin
Cypress Creek, 300 mg/1.
Black Bayou, 200 mg/1.
Frazier Creek (Monterrey Lake), 300 mg/1.
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12
Caddo Lake, 300 mg/1.
Piney Bayou, 300 mg/1.
Billiard Creek, 300 mg/1.
Cross Bayou, 300 mg/1.
Neche_s River Basin
Neches R. Tidal-Zone 1 (Sabine Pass),
25,000 mg/1.
Neches R. Tidal-Zone III (Intercoastal At
Port Arthur], 25,000 mg/1.
Neches R. Tidal-Zone Ha (Taylor Bayou
Below Barrier), 25,000 mg/1.
Neches R. Tidal-Zone III (Buffer Zone
Adjacent to Sabine Lake), 15,000 mg/1.
Neches R. Tidal-Zone IV (Above Sabine Lake)
10,000 mg/1.
Sabine Lake Zone V, 20,000 mg/1.
Neches R.-Zone VI (Above Neches Canal),
150 rag/1.
Angelina River, 250 mg/1.
Trinity River Basin
Trinity R, (Tidal to Rosser), 600 mg/1.
Trinity R. (Rossner to West Fork Headwater),
500 mg/1.
Trinity R. (East Fork), 300 mg/1.
Trinity R. (Elm Fork), 500 mg/1.
Brazos River Basin
Brazos R. (Tidal to Whitney Reservoir),
900 mg/1.
Brazos R. (Whitney to Palo Pinto), 1,600
mg/1.
Brazos R. (Palo Pinto to Salt Fork), 9,000
mg/1.
Clear Fork to Brazos River, 2,000 mg/1.
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13
Salt Fork of Brazos River, 50,000 mg/1.
Double Mountain Fork of Brazos River,
5,000 mg/1.
White River, 500 mg/1.
Navosota River, 400 mg/1.
Little River, 400 mg/1.
San Gabriel River, 400 mg/1.
Leon River, 600 mg/1.
Lampasas River, 700 mh/1.
Bosque River, 400 mg/1,
San Jacinto River Basin
San Jacinto River (East Fork), 400 mg/1.
San Jacintc R. (West Fork) (Includes
Lake Houston), 200 mg/1.
Peach Creek, 250 mg/1.
Caney Creek, 120 mg/1.
Colorado River Basin
Colorado R. (Tidal to San Saba) , 500 mg/1.
Colorado R. (San Saba to Ballinger),
1 ,000 mg/1.
Colorado R. (Ballinger to J.B. Thomas Dam),
5,000 mg/1.
Proposed Robert Lee Reservoir, 1,000 mg/1.
Colorado R, (Lake J.B. Thomas £ to Head
of River), 500 mg/1.
San Bernard R., 300 mg/1.
Pedernales River, 400 mg/1.
Llano River, 300 mg/1.
San Saba River, 500 mg/1.
Concho River, 1,000 mg/1.
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14
South Concho River, 600 mg/1.
Middle Concho River, 300 mg/1.
North Concho River, 500 mg/1.
Lavaca River Basin
Lavaca River, 500 mg/1.
Navidad River, 500 mg/1.
Gua_dalup_e_River. Basin
Guadalupe R. Zone 1 (Tidal to Confluence
San Antiono River), 500 mg/1.
Guadalupe R., Zone II (San Antonio R. to
Confluence San Marcos River), 400 mg/1.
Guadalupe R. Zone III (Above Confluence
San Marcos River), 400 mg/1.
San Marcos River, 400 mg/1.
Comal River, 400 mg/1.
Blanco River, 400 mg/1.
San Antonio River Basin
San Antonio River (Below Cibolo Creek),
700 mg/1.
San Antonio River (Above Cibolo Creek),
700 mg/1.
Medina R. (Below Leon Ck.), 700 mg/1.
Medina R. (Above Leon Ck), 400 mg/1.
Cibolo Creek, 500 mg/1.
Leon Creek, 700 mg/1.
Nueces River Basin
Nueces R.(Tidal To Cotulla) , 500 mg/1.
Nueces R. (Above Cotulla), 300 mg/1.
Frio River, 800 mg/1.
Sabinal River, 500 mg/1.
Atascosa River, 500 mg/1.
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15
Mission River, 400 mg/1.
Aransas River, 400 mg/1.
Rio Grande River Basin
Rio Grande (Tidal to Brownsville), 1,500
mg/1.
Rio Grande R. (Brownsville to Falcon Lake) ,
750, mg/1.
Rio Grande R. (Falcon Lake), 600 mg/1.
Rio Grande R. (Falcon Lake to Del Rio),
750 mg/1.
Rio Grande R. (Del Rio To Presidio),
1,000 mg/1.
Rio Grande R. (Presidio to Fabens) ,
4,000 mg/1.
Rio Grande R. (Fabens to New Mexico) ,
1,000 mg/1.
San Felipe Creek, 300 mg/1.
Devils River, 300 mg/1.
Pecos River, Zone 1-Rio Grande to Sheffield,
6,000 mg/1.
Pecos River, Zone II-Sheffield to
\ew Mexico, 20,000 mg/1.
TIDAL WATERS
Neches-Trinity Coastal Basin
Gulf of Mexico at Sabine Pass, 45,000 mg/1.
Sabine Pass, 25,000 mg/1.
Sabine R. Tidal (Sabine Lake to Morgan's
Bluff), 5,000 mg/1.
Sabine Lake, 20,000 mg/1.
Neches R. Tidal (Above Sabine Lake)
10,000 mg/1.
Neches R. Tidal (Buffer Zone Adj. to
Sabine L), 15,000 mg/1.
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16
Neches R. Tidal (Taylor Bayou below Barrier)
25,000 mg/1.
Neches R. Tidal (Intracoastal at Port
Arthur), 25,000 mg/1.
Intracoastal Canal (Gilchrist to Sabine-
Neches Canal), 25,000 mg/1.
Trinity-San Jacinto Coasta^ Basin
Gulf of Mexico at Galveston, 45,000 mg/1.
Trinity River Tidal, 10,000 mg/1.
San Jacinto River Tidal (See also Texas
Water Quality Board Order 65-9), 20,000 mg/1.
Houston Ship Channel (Turning Basin Area),
9,500 mg/1.
Houston Ship Channel-San Jacinto Monument
to Turning Basin (Measure at San Jacinto
Monument to conform with Texas Water
Quality Board Order 65-9), 16,000 mg/1.
Houston Ship Channel-Morgan's Point to
San Jacinto Monument (Measure at Morgan's
Point to conform with Texas Water Quality
Board Order 65-9), 20,000 mg/1.
Clear Lake (Sewage Effluents Diverted),
12,000 mg/1.
Texas City Ship Channel (Monitored at
Galveston Bay Survey Station A-92,
Northwest of Snake Island), 35,000 mg/1.
San Jacinto-Brazos Coastal Basin
East Bay, 25,000 mg/1.
Galveston Bay-East of Houston Ship
Channel, Bounded by Channel Marker, Fisher
Shoals Day Beacon #1, Lone Oak Bayou,
Smith Point, Hanna Reef § Bolivar Penninsula
25,000 mg/1.
Trinity Bay § Galveston Bay East of
Houston Ship Channel § North of Channel
Marker #68 $ Fisher Shoals Day Beacon #1)
20,000 mg/1.
Galveston Bay-West of Houston Ship
Channel, 25,000 mg/1.
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17
West Bay-East of Karankawa Reef, 32,000
mg/1.
West Bay-West of Karankawa Reef, 32,000
mg/1.
Bastrop Bayou Tidal, 25,000 mg/1.
Oyster Creek Tidal,32,000 mg/1.
Brazos River Tidal, 15,000 mg/1.
Brazos Colorado Coastal Basin
San Bernard River Tidal, 25,000 mg/1.
Cedar Lakes, 30,000 mg/1.
East Matagorda Bay, 20,000 mg/1.
Colorado Lavaca Coastal Basin
Colorado River Tidal, 18,000 mg/1.
Tres Palacios Bay, 35,000 mg/1.
West Matagorda Bay, 40,000 mg/1.
Lavaca River Tidal, 30,000 mg/1.
Lavaca Bay, 30,000 mg/1.
Lavaca-Guadalupe Coastal Basin
Espiritu Santo Bay, 40,000 mg/1.
Victoria Barge Canal, 25,000 mg/1.
Guadalupe River Tidal, 30,000 mg/1.
San Antonio Bay, 35,000 mg/1.
San Antonio-Nueces Coastal Basin
Mesquite Bay, 35,000 mg/1.
Mission River Tidal, 28,000 mg/1.
Copano Bay, 35,000 mg/1.
Aransas River Tidal, 40,000 mg/1.
Aransas Bay, 40,000 mg/1.
Gulf of Mexico at Port Aransas, 45,000 mg/1.
Nueces River Tidal, 45,000 mg/1.
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Utah
Vermont
Virgina
Washington
West Virginia
Wisconsin
Wyoming
District of Columbia
Puerto Rico
Guam
Virgin Islands
18
Corpus Christ! Ship Channel, 45,000 mg/1.
Nueces Bay, 45,000 mg/1.
Corpus Christi Bay, 45,000 mg/1.
Nueces-Rio Grande Coastal Basin
Baffin Bay, 62,000 mg/1.
Gulf of Mexico at Port Mansfield, 45,000 mgA
Laguna Madre, 62,000 mg/1.
Arroyo Colorado Tidal, 20,000 mg/1.
Brownsville Ship Channel, 45,000 mg/1.
South Bay, 48,000 mg/1.
Rio Grande Tidal, 5,000 mg/1.
No specific requirement found in standards.
No specific requirement found in standards.
500 mg/1
No specific requirement found in standards.
Chlorides 100 mg/1.
Sulfates 200 mg/1.
PWS = Not to exceed 500 mg/1 as a monthly average
value, nor exceed 750 mg/1 at any time.
Industrial - Not to exceed 750 mg/1 as a monthly
average value, nor exceed 100 mg/1 at any time,,
No specific requirement found in standards.
No specific requirement found in standards.
No specific requirement found in standards.
No specific requirement found in standards.,
No specific requirement found in standards.
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