800R80902
   NITROGEN  - AMMONIA/NITRATE/NITRITE
         Water Quality Standards
           Criteria Summaries
 A Compilation of State/Federal Criteria
             September 1980
  U. S.  Environmental Protection Agency
Office of Water Regulations and Standards
        Washington, D. C.  20460
              * * .'

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               NATIONAL SUMMARY




                       OF




         STATE WATER QUALITY STANDARDS









           NITRATES/NITRITES/AMMONIA









                 SEPTEMBER, 1980











                  PREPARED FOR




UNITED STATES ENVIRONMENTAL PROTECTION AGENCY




         CRITERIA AND STANDARDS DIVISION




                401 M STREET, S. W.




             WASHINGTON, D. C. 20460
                   PREPARED BY




       NALESNIK ASSOCIATES INCORPORATED




             505 ELEVENTH STREET, S. E.




              WASHINGTON, D. C. 20003
                                 Contract Number   68-01-6058



                                 Project Number    WA-80-A055

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INTRODUCTION
This digest is compiled 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 pollutant specific  criteria for
interstate 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 interstate
waters,  evaluating adherence to the  standards, and overseeing  enforcement of
standards  compliance, has been mandated by Congress.

Standards, a nationwide strategy for  surface  water quality management, contain
three major elements:  the  use  (recreation,  drinking   water,  fish  and  wildlife
propagation,  industrial,  or agricultural) to be made of the navigable water; criteria
to protect these uses; and  an antidegradation statement to protect existing high
quality waters, from degradation  by the addition of pollutants.

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  publication  Quality Criteria  for Water (QCW),
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.

Criteria for  ammonia, nitrate or nitrite nitrogen in State water quality standards
are the subject of this digest.  Ammonia in most waters is a biological degradation
product of nitrogenous organic matter.  When dissolved in water, ammonia  will
react with the water to form ammonium ions.  Ammonium can also  be released
from proteinaceous organic matter and urea, or synthesized from nitrogen fixation.
Nitrate  is formed from the complete oxidation  of ammonium by certain micro
organisms in which nitrite is  an intermediate product.  In well oxygenated waters
nitrite is  readily oxidized to nitrate.  The rationale for establishing water quality
criteria for these three  common molecular forms of nitrogen are:

     (1)   ammonia  toxicity  to  aquatic  life is  well  documented and  its
           toxicity is directly dependent on the pH of the water in  which it is
           dissolved;

     (2)   growing plants  assimilate  nitrate  and ammonium ions  into plant
           proteins; and

     (3)   both  nitrate and nitrite nitrogen are toxic to aquatic  life  where
           specific concentrations of either are reached in a waterbody.

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To prevent the nuisance and toxic effects of any of the nitrogen forms,  the
1976 Quality Criteria for Water recommends the following criteria:
       0.02 mg/1 (as un-ionized ammonia) for freshwater aquatic life.

     Concentrations of total ammonia (NH, +  NtL  ) which  contair
     ionized ammonia concentration of 0.020 mg/1 l?Ho(mg/l)
160.
110.
73.
50.
35.
51.
34.
23.
16.
11.
16.
11.
7.3
5.1
3.5
5.1
3.4
2.3
1.6
1.1
1.6
1.1
0.75
0.52
0.37
0.53
0.36
0.25
0.18
0.13
0.18
0.13
0.093
0.070
0.055
0.071
0.054
0.043
0.036
0.031
0.036
0.031
0.027
0.025
0.024
Temper-                           pH Value
 ature
  (C)        6.0    6.5    7.0    7.5    8.0   8.5      9.0      9.5     10.0
 10...
 15...
 20...
 25...
 30...         25.     7.9    2.5    0.81   0.27  0.099    0.045   0.028   0.022

          10 mg/1 nitrate nitrogen (N) for domestic water supply (health).
Since water  quality standards experience revisions  and upgrading from  time to
time, following procedures set forth in the Clean Water Act, individual entries in
this  digest may  be superseded.  As these revisions are accomplished and allowing
for the States to revise their standards accordingly, this digest will be updated and
reissued.  Because this publication is not intended for use other than as a general
information resource, to  obtain the latest information and for special purposes and
applications,  the reader  needs  to refer to the current approved water  quality
standards.  These can be obtained  from the State water pollution control agencies
or the EPA or Regional Offices.

Individual State-adopted  criteria follow:

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                         REFERENCES

A
     California Water Quality Standards by River Basins, c.a. 1975

     For  more detailed  information on selected basins, sub-basins
     and stretches  of streams and coastal areas refer to California
     State Water Quality Standards.

B    Delaware Water Quality Standards, March 25, 1979
r>
     Idaho Water Quality Standards, c.a. September, 1979

     Missouri Water Quality Standards, c.a. February, 1978
g
     American Samoa Water Quality Standards,
     Revised July, 1973

F    Territory of Guam Water Quality Standards, Sept. 1975

     Trust Territory of the Pacific Islands  Water Quality
     Standards, October 21, 1973

H    Virgin Islands Water Quality Standards, Aug. 1973
ENVIRONMENT REPORTER, The Bureau of National Affairs, Inc.
Washington, D. C. 20037

1    Pages 701:0501-0509, February 16, 1979

2    Pages 706:1004-1008, July 20, 1979

3    Pages 711:0542-0544, August 5, 1977

4    Pages 716:0603, March 26, 1976

5    Pages 726:1005, 1011-1013, March 7, 1980

     Basic Water Quality Standards adopted May 22, 1979,
     have not yet been submitted to EPA for formal approval.

6    Pages 731:1002-1009, September 8, 1978

7    Pages 746:1008-1014, October 19, 1979

8    Pages 751:0504-0505, January 25, 1980

9    Pages 765:0512-0515, January 30, 1976

10   Page 761:0503-0504, 1973
                                   111

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11   Page 766:0504-0509, October 5, 1979

12   Pages 771:0502-0504, September 29, 1978

13   Pages 776:0504-0506, April 10, 1979

14   Pages 781:0501-0502, May 18, 1979

15   Pages 786:0501-0502, August 29, 1975

16   Page 791:0583, May 26, 1978


17   Pages 796:0103-0108, February 16, 1979
i p
     Pages 801:1001-1002, Sept. 29, 1978

19
     Page 806:1003, March 30, 1979

Of)
     Page 811:1043, 1974

21   Pages 816:0602-0607, 0642-0648, 1974

99
     Pages 821:0502-0505, June 30, 1978
0-3
     Pages 831:0501-0510, February 21, 1975

04.
     Page 836:0502, June 30, 1978
OK
     Pages 841:0507-0537, December 7, 1979

26   Pages 846:0501-0508, November 17, 1978

97
     Pages 851:1001-1023, December 15, 1978
OQ
     Pages 856:1001-1002, July 18, 1978
on
     Pages 861:1002-1007, August 11, 1979
jfi
     Pages 866:1004-1009, December 28, 1979

31   Pages 871:0501-0506, November 25, 1977

JO
     Pages 876:1001-1043, May 26, 1978

QQ
     Pages 881:1001-1007, September 21, 1979

>A
     Pages 886:0513-0524, August 29, 1975

JC
     Pages 891:1001-1129, November 16, 1979
                                        iv

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36   Pages 901:0501-0505, November 3, 1978



37   Pages 906:0501-0506, October 13, 1978



38   Pages 911:0501-0507, June 22, 1979



39   Pages 916:0541-0544, April 14, 1978



40   Pages 921:1001-1003, August 13, 1976



41   Pages 926:0541-0563, January 26, 1979



42   Pages 931:0501-0508, May 26, 1978



43   Pages 936:1001-1003, June 27, 1975



44   Pages 941:1001-1005, May 26, 1978



45   Pages 946:0501-0520, July 14, 1978



46   Pages 951:1002-1003, April 28, 1978



47   Pages 956:1001-1007, January 11, 1980




48   Page 741:1002, November 23, 1979



49   Pages 896:0301-0310, March 31,  1978

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                            NITRATES/NITRITES/AMMONIA
State

Alabama


Alaska2


Arizona"*
1
Criteria Values in mg/1

Not specified


Not specified
           A. The mean annual total nitrate  concen-
           trations of the following waters shall not
           exceed the  values given below nor  shall
           the total nitrate  concentrations of more
           than 10  percent  of  the samples  in  any
           year exceed the 90 percent values given
           below.   Unless  otherwise specified,  indi-
           cated values also apply to tributaries to
           the named waters.

           Total nitrates as NO3 mg/1

           4 Mean annual
           7 90 pet-value
                   5 Mean annual
                   5 Mean annual
                   7 90 pet-value
                   5 Mean annual
                   7 90 pet-value


                   B.  The above standards are intended to
                   protect the beneficial uses of the named
                   waters.   Because  regulation of  nitrates
                   and phosphates alone may not be adequate
                   to protect waters from eutrophication, no
                   substance shall be added to  any  surface
                   water which  produces  aquatic growth to
                   the extent  that such  growths create a
                   public nuisance or interference with bene-
                   ficial uses of the water defined and desig-
                   nated in Reg.  6-2-6.5.
Designated Stream Use

All


All
                                            Colorado River from  Utah
                                            border  to   Willow  Beach
                                            (main stem)

                                            Colorado    River    from
                                            Willow  Beach  to  Parker
                                            Dam (main stem)

                                            Colorado    River    from
                                            Parker  Dam  to   Imperial
                                            Dam (main stem)

                                            Colorado    River    from
                                            Imperial  Dam  to Morelos
                                            Dam (main stem)
                                    -1-

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State
Arkansas
Criteria Values in mg/1

Not specified

Nutrients  - The naturally occurring nitro-
gen/phosphorus ratio shall not be signifi-
cantly altered due  to  municipal,  indus-
trial,  agricultural  or  other  waste  dis-
charges, nor shall total  phosphorus exceed
100 ug/1 in streams or 50 ug/1 in lakes and
reservoirs due to any such discharges.
Designated Stream Use

All
CaliforniaA
Colorado"
Nitrates + total nitrites
10

100
Ammonia - not specified

Un-ionized ammonia - some basins

Note:     See  California  State  Water
Standards for specific  rivers, basins  and
coastal waters.

Ammonia (as N)
0.02 (un-ionized)
0.06 (un-ionized)
0.5

Nitrate (as N)
1001
10

Nitrite (as N)
0.05
0.5
101
1.0

  In order to provide a reasonable  margin
of safety to allow for unusual situations
such as extremely high water ingestion or
nitrite formation  in  slurries,  the  NO-N
plus NOn-N content in drinking waters for
livestock and poultry should be limited to
100  ppm  or less, and the  NO-N content
alone be limited to 10 ppm or  less.
                                                                 All

                                                                 Livestock watering
                                                                 (Basin 3)

                                                                 All
                                                                 Cold water biota
                                                                 Warm water biota
                                                                 Domestic water supply
                                                                 Agriculture
                                                                 Domestic water supply
                                                                 Cold water biota
                                                                 Warm water biota
                                                                 Agriculture
                                                                 Domestic water supply
                                      -2-

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State

Connecticut

         D
Delaware





Florida7
       a
Georgia
      q
Hawaii
Idaho10
Illinois
Criteria Values in mg/1

Not specified


Ammonia - N  0.4

Total nitrogen  3.0


Nitrate - 10.0 as N or that concentration
determined in Nutrients below

Nitrite - Not specified

Ammonia (un-ionized) 0.02
                   Nutrients - In  no  case shall nutrient con-
                   centrations of  a body of water be altered
                   so  as  to  cause an  imbalance in natural
                   populations of aquatic flora and fauna.
Not specified
Total nitrogen, not greater than
0.10 mg/1

Total nitrogen, not greater than
0.15 mg/1

Total nitrogen, not greater than
0.20 mg/1
Not specified
Ammonia (as N) 1.5 mg/
                   Ammonia  Nitrogen  as  N. (Storet  No.
                   00610).  No  effluent  from  any  source
                   which discharges to the Illinois River, The
                   DesPlaines River downstream of  its con-
                   fluence with  the  Chicago  River  System,
                   or the Calumet River System, and  whose
                   untreated  waste load  is  50,000 or more
                   population equivalents shall contain more
                   than 2.5 mg/1 of ammonia nitrogen as N -
Designated Stream Use

All


Public water supply

Public water supply


Public water supply
All

Public water supply, shell-
fish, recreation

Public water supply, shell-
fish, recreation
Class AA


Class A


Class B



All
All     waters     except
secondary   contact    and
indigenous aquatic life and
Lake Michigan

Secondary  contact    and
indigenous  aquatic    life
waters
                                     -3-

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State
Criteria Values in mg/1
Designated Stream Use
Illinois
  (con't)
Indiana1^
during  the  months  of   April  through
October, or 4 mg/1 at other times, after
December  31, 1977.  Sources discharging
to any  of  the above waters and whose
untreated waste load  cannot be computed
on a population  equivalent basis compar-
able to  that  used for municipal  waste
treatment plants and  whose ammonia  nit-
rogen discharge exceeds  100 pounds  per
day shall not discharge an  efffluent of
more  than  3.0 mg/1 of ammonia nitrogen
after December  31, 1974.

0.02 mg/1

10.0 mg/1 Nitrate-Nitrogen


1.0 mg/1 Nitrite-Nitrogen
The  bioassay  criterion  for  toxic  sub-
stances of 1/10 x 96 hr TLM  applies to
ammonia in all waters except those listed
in the specific standards as follows:

Unionized Ammonia
0.03 mg/1 - Monthly Ave.
0.1  mg/1 - Daily Max.

0.02 mg/1 Monthly Ave.
0,05 mg/1 - Daily  Max.

1.5  mg/1 total Ammonia Nitrogen
                   0.02 mg/1 Unionized Ammonia
                                                               All Lake Michigan Waters

                                                               Public and Food Processing
                                                               water supply

                                                               Public and Food Processing
                                                               water supply
                                                               Inner Harbor, Gary Harbor,
                                                               Burns Harbor

                                                               Lake Michigan
Grand  Calumet River and
Indiana Harbor Ship Canal

Wolf  Lake and Wolf Lake
Harbor
                   Ammonia
                   Toxic Substances:  The concentration of
                   toxic substances shall not  exceed those
                   values listed in the United States Environ-
                   mental Protection Agency Administrator's
                   Quality  Criteria  for  Water 1976 for the
                   protection of sensitive aquatic life.
                   (For  Ammonia  this  value  is  0.02  mg/1
                   NH3)

                   Toxic Substances:   Not to exceed one-
                   tenth of  the  96-hour median tolerance
                   limit of salmonid fishes  or the  natural
                                             Natural    Spawning    and
                                             Rearing   or   Imprinting
                                             Areas for Salmonid Fishes
                                             Migration    Routes    for
                                             Salmonid Fishes
                                     -4-

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State
Criteria Values in mg/1
Designated Stream Use
Indiana
  (con't)
Iowa
    13
biota obtained from continuous flow bio-
assays where  the dilution water and toxi-
cant  are  continuously  renewed,  except
that other lower application  factors may
be used in specific  cases when justified on
the basis of available evidence.

Nitrates and Nitrites:
Plant  Nutrients:  Free  from  substances
attributable to municipal, industrial, agri-
cultural   or   other  sources  in   concen-
trations or combinations which will cause
or  contribute  to  the  growth of aquatic
plants or algae in such degree as to create
a nuisance, be unsightly or deleterious, or
be  harmful  to salmonid  fishes  or  the
natural  biota.  (Stream  Pollution Control
Board of  the  State of Indiana;  SPC 12R,
Sec.B; filed May 26, 1978, 3:30  PM 1  IR
100)

Plant Nutrients:   Free from substances
attributable to municipal, industrial, agri-
cultural   or   other  sources  in   concen-
trations or combinations which will cause
or  contribute  to  the  growth of aquatic
plants or algae in such degree as to create
a nuisance, be unsightly or deleterious, or
be  harmful  to salmonid  fishes  or  the
natural biota.

Ammonia (N)
5 (Nov 1 - March 31)
2 (April 1 - Oct. 31)
                   2.5 (Nov.] - March 31)
                   1.0 (April 1 - Oct. 31)


                   Nitrate (NO,.) 45

                   Nitrite - Not specified
                                                                 Natural   Spawning   and
                                                                 Rearing   or    Imprinting
                                                                 Areas for Salmonid Fishes
                                                                 Migration    Routes    for
                                                                 Salmonid Fishes
Warm water  fish and aqua-
tic  life,  secondary recrea-
tion

Cold water fish  and aqua-
tic  life,  secondary recrea-
tion.

Public water  supply

All
Kansas
      14
Ammonia:  Man-made sources  shall  not
cause the undissociated ammonium hydro-
xide concentration of waters  of the state
to exceed 0.15 mg/1 as N.
All
                                      -5-

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State

Kansas
  (con't)

Kentucky
15
Louisiana
         16
      17
Maine
Maryland
         18
Massachusetts
              19
Criteria Values in mg/1

Nitrites - Not specified


Ammonia 0.05


Not specified

Nutrients - the naturally occurring nitro-
gen phosphorous ratio shall be maintained.


Not specified


Not specified

The state recognizes  that certain waters
of  the   State   are   eutrophic  or  are
approaching eutrophic conditions. All dis-
charges to waters which are eutrophic or
potentially eutrophic, when so identified
by the State, shall be treated as necessary
to reduce  eutrophic  effects.   The State
shall require that wastewaters, containing
nutrients which cause or may cause  eutro-
phication be  given advanced waste  treat-
ment  prior to discharge, or be disposed of
by spray  irrigation on land,  or by other
practicable procedures  which  will avoid
direct discharge to surface waters.


Nitrate: 10

The   discharge  of  nutrients,  primarily
phosphorus or nitrogen,  to waters of the
Commonwealth will  be  limited  or  prohi-
bited   by the  Division  as necessary to
prevent  excessive  eutrophication of such
waters.    There  shall  be  no  new  or
increased  discharges of  nutrients  into
lakes   and ponds, or   tributaries  thereto.
Existing discharges  containing  nutrients
which encourage eutrophication or growth
of weeds or  algae shall be treated.  Acti-
vities  which  may result in non-point  dis-
charges of nutrients shall be conducted in
Designated Stream Use

All


All


All
                                                        All


                                                        All
                                                        Public water supply
                                       -6-

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State
Criteria Values in mg/1
Designated Stream Use
Massachusetts
  (con't)
accordance  with  the best  management
practices reasonably determined by  the
Division  to  be necessary  to  preclude or
minimize such discharges of nutrients.
Michigan
        20
Not specified

Nutrients  originating   from   domestic,
industrial,  municipal or domestic  animal
sources  shall  be  limited  to the  extent
necessary  to   prevent  stimulation   of
growths  of aquatic  rooted, attached  and
floating  plants, fungi or bacteria which
are or may become injurious to  the desig-
nated uses of the waters of the state.

(1) Toxicity of undefined toxic substances
am specifically  included in subrules  (2)
vid (3) shall be determined by develop-
ment  of 96-hour  TLM's or other  appro-
priate  effect   and   points  obtained  by
continuous flow or in situ bioassays using
suitable  test organisms.  Concentrations
of  undefined   toxic  substances  in  the
waters of the  State  shall not exceed safe
concentrations as determined by applying
an application factor, based on knowledge
of the behavior  of  the toxic  substances
and the  organisms to be protected in the
environment, to the TLM or other  appro-
priate effect end point.

(2) For all  waters of the State, unless on
the basis of  recent information, a more
restrictive  limitation   is   required   to
protect a designated use, concentrations
of  defined toxic  substances,   including
heavy   metals,   shall   be  limited   by
application  of  the  toxic  substances,
recommendations    contained    in    the
chapter   on    Freshwater   Organisms,
"Report   of    the  National   Technical
Advisory Committee to the Secretary of
the  Interior,   Water  Quality   Criteria,
1968," or  by  application  of  any  toxic
effluent  standard,  limitation   or  prohi-
bition promulgated by  the  Administrator
of  the  United  States  Environmental
Protection  Agency  pursuant to section
307(a) of the  United States  Public  Law
92-500, whichever is more restrictive.
All

All
                                      -7-

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State
Criteria Values in mg/1
Designated Stream Use
Michigan
  (con't)
(3) In addition to the standards prescribed
in subrules (1) and (2), waters of the State
used for public  water supply shall, at the
point of  water intake,  not exceed  the
permissible   inorganic   and    organic
chemicals  criteria for raw  public  water
supply  in   "Report  of   the   National
Technical  Advisory  Committee  to  the
Secretary  of the  Interior, Water Quality
Criteria,   1968,"  except  that   chlorides
shall  be limited to  the  same  extent as
prescribed by rule ] 051(2).
Minnesota
          21
Nitrates (NOJ 45.0
                    0.2 Ammonia (N)
                    1.0
Domestic water supply
Classes A, B, and C

Fisheries and recreation
(Class A)

Fisheries and recreation
(Class B)
                    1.5
                    Unspecified  toxic substances  -  none  at
                    levels harnful either directly or indirectly.
                                              Fisheries and recreation
                                              (Class C)

                                              Agriculture and wildlife
                                              (Class B)
          22
Mississippi
Not specified
All
Missouri
       .D
0.1 Ammonia nitrogen
0.02

10.0 Nitrate nitrogen
Aquatic life
Coldwater fishery

Drinking water supply
Montana
        23
Not specified
All
Nebraska
         24
Ammonia as  N- Seasonal limits  assigned
to each designated stream segment with
limits ranging from 1 to 6 mg/L.
All
Nevada
       25
Nitrates (NO~)
0.8-7.66 Single Value

.07-5.0 Annual average
                                                                 Variable

                                                                 Variable

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State
Criteria Values in mg/1
Designated Stream Use
Nevada
  (con't)
               26
Nitrates (NOJ
1.0 - 5.0 Single Value

.09-1.5 Annual Average

Single value and annual average varies for
each basin.   See  Water  Pollution Rules,
Table 1 thru 55 for  specific rivers, lakes,
and streams.
New Hampshire     Not specified
Variable

Variable
                                             All
New Jersey
           27
Ammonia   or   ammonium   compounds:
None, either alone or in combination with
other substances,  in  such concentrations
as to affect humans or be detrimental to
the   natural  aquatic   biota,  produce
undesirable  aquatic life,  or  which  would
render the waters unsuitable for the desi-
gnated  uses.   Where sources  of  public
water supply is potential use, none  which
would cause standards for drinking  water
to   be   exceeded   after   appropriate
treatment.

Nitrate Nitrogen 2.0
                   3.0
All
All uses in FW-central Pine
Barrens

All   uses   in   FW-lower
Mullica and Wading Rivers
Central Pine Barrens.
New Mexico
           28
Not specified

Surface waters shall be free of nitrogen
and other dissolved gasses at levels above
110% saturation  when  supersaturation is
attributable  to  municipal,  industrial  or
other discharges.
All
New York
         29
Nitrates: Not specified

Nitrites: Not specified

Ammonia or ammonium compounds:  2.0
as NHL at pH of 8.0 or above
      O
All

All

Water  supply  source  for
drinking,  culinary or  food
processing; fish life
                                     -9-

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State
North Carolina
              30
Criteria Values in mg/1

10.0 Nitrate nitrogen
Designated Stream Use

Drinking   water    supply
(treatment   plus    disin-
fection)
North Dakota
             31
Ohio32
Nitrates: 1.0 - 1.5 (depending upon type of
drinking water treatment process utilized)

NO3 as N: 0.375 (goal)
Ammonia: 0.1 - 13.0 depending upon tem-
perature and pH

The concentration of un-ionized ammonia
(NHJ  shall not  exceed  0.05  mg/1, un-
ionized ammonia shall be determined for
values for total ammonia  N, pH and tem-
perature and the following equation:
Un-ionized ammonia  =  1.3^|total ammo-
nia-N)/ 1 + 10 ^p a " p ; where  pk =
0.0902 + 2730/273.2  + T) and T = Templ-
rature in degrees C

Nitrate-N plus Nitrite-N: 10.0

Nitrite-N: 1.0

Nitrate-N: 10.0

Nitrates plus nitrites: 100.0

Ammonia as Nitrogen
0.2 -  13.0 mg/1 depending on temperature
and pH

0.1 -  6.5  mg/1 depending  on temperature
and pH
                   1.5 - 12.8 mg/1 depending on temperature
                   and pH

                   0.2 - 13.0 mg/1 depending on temperature
                   and pH except as indicated for  specific
                   streams

                   Nitrate - N; 10.0 mg/1
                   Nitrates plus nitrites: 100.0 mg/1
All
                                                                All lake uses
All except Ohio River uses
                                                               All Ohio River uses
                                                               All Ohio River uses

                                                               All Ohio River uses

                                                               Public water supply

                                                               Agricultural water supply

                                                               Warm  water habitat
                                                               Lake   Erie,   exceptional
                                                               warm water and cold water
                                                               habitat
                                             Seasonal
                                             habitat

                                             limited
                                             habitat
            warm    water
           warm
water
                                             Lake Erie  and public water
                                             supply

                                             Lake Erie  and agricultural
                                             water supply
                                     -10-

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State

Ohio
  (con't)
Criteria Values in mg/1

Ammonia not greater than 12.0 mg/1 from
12/1/74  to 6/30/76; nor greater  than 8.0
mg/1 from 7/1/76 to 1/1/79

Toxic  substances less than 1/10 x 96  hr
TLM
(Applies to Ammonia)
Designated Stream Use

Lower Cuyahoga River



Mahoning River
Oklahoma
         33
Nitrates as N: 10.0
Drinking water supply
Oregon
       34
Not specified
All
            35
Pennsylvania
Nitrite plus Nitrate:
10.0 (as nitrogen)

Ammonia nitrogen:
0.5 - 1.5

Note:  See  Drainage lists A through E of
Pennsylvania Water Quality Standards  for
applicable uses and streams
All
Rhode Island
            36
              37
South Carolina
Not specified

Chemical  constituents narrative:    bio-
assays shall be performed as required-

Chemical  constituents narrative:    the
limit  prescribed  by the USEPA will be
used where not superseded by more strin-
gent state requirements.

Not specified
All

Fisheries (fresh water)
                                                                Public    drinking    water
                                                                supplies (fresh water)
All
South Dakota
            38
10.0 Nitrates
50.0

0.02 un-ionized Ammonia (as N)
                   0.04 un-ionized ammonia (as N)
                   0.05
Domestic water supply
Wildlife propagation

Domestic  water   supply,
cold water fish

Warm  water  fish (perma-
nent and semi-permanent)

Warm water fish (marginal)
                                     -11-

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State

South Dakota
  (con't)
Tennessee


Texas40


Utah41
          39
Criteria Values in mg/1

Nitrites: Not specified


Not specified


Not specified
NH3 as N  0.02 (un-ionized)

NO3 as N  0.02
Designated Stream Use

All


All


All


Aquatic life

Aquatic   life,  recreation
and aesthetics
Vermont
        42
There shall be no discharge of  wastes to
Class A  waters  that  do  not  meet  or
exceed  the technical  and other require-
ments for such waters nor  shall there be
any  discharge  of wastes containing  any
form of nutrients which would encourage
eutrophication  or  growth  of  weeds  or
algae.

There shall be no new or  increased dis-
charge  of  wastes after May  27,  1971
containing any  form of  nutrients which
would encourage  eutrophication  or growth
of weeds  and algae in any lake, pond or
reservoir.    Any  discharge of   wastes
existing prior to  May 27, 1971 containing
soluble  or other  nutrients  which would
encourage  eutrophication  or growth  of
weeds  and  algae in  any lake,  pond,  or
reservoir   shall   receive   the   highest
practical  degree  of treatment  currently
available to remove such nutrients.
All
Virginia
           44
Washington
             45
West Virginia
Wisconsin***
Nitrates plus nitrites: 10.0 (as N)
Not specified
45.0 Nitrates
NII3-N

3.0 mg/1 during warm temperature
6.0 mg/1 during cold temperatures
Public water supply


All


All
                                                                 Intermediate  aquatic  life
                                                                 waters
                                      -12-

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   State
           .47
   Wyoming
   American Samoa
   District of
    Columbia
  Guam
   Puerto Rico
              49
Criteria Values in mg/1

0.02 Ammonia as (N)


The  naturally  occurring  atomic ratio of
NO,-N  to PCL-P  in a body of water will
be  maintained.   Similarly,  the ratio of
inorganic  phosphorus  (orthophosphate) to
total phosphorus  (the sum  of inorganic
phosphorus, dissolved  organic phosphorus,
and particulate (phosphorus) will be main-
tained  in  the ratio  and amount  as  it
occurs in the receiving waters naturally.
Ammonia  -  0.02   mg/1  as  unionized
ammonia

Nitrates/Nitrites  -  10  mg/1  max.  as
nitrate (N)
Total nitrogen shall not exceed
0.40 mg/1

Total nitrogen shall not exceed
0.75 mg/1

Total nitrogen shall not exceed
1.5 mg/1
10.0 N  rate plus Nitrite (as N)

5.0 Nitrogen (NO2,
                  G
   Trust Territories    0.01  Ammonia (N)
   Virgin Islands
               H
                      The  naturally  occurring  ratio  of  the
                      concentrations of nitrogen to phosphorus
                      will be maintained in all waters.
Not specified
Designated Stream Use

All cold water fisheries


All
All waters


Domestic water supply



AA


A, 2b-I, 2b-II, C


2a-I, 2a-II



All surface waters

All coastal waters


Drinking water supply

All
All
                                        -13-
O-U.S. GOVERNMENT PRINTING OFFICE: 1980- 341-082/107

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