vxEPA
United States
Environmental Protection
Agency
Office of Water
Regulations and Standards
Washington, DC 20460
EPA 440/5-88-041
September 1988
State Water Quality
Standards Summary:
District of Columbia
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DISCLAIMER
TT c Publication was prepared by Battelle under contract to
u.&. Environmental Protection Agency (Contract 68-03-3534)
?£?ar2 information sources were used to compile data presented
this document. Each State was given an opportunity to review
and Provide comments on a draft of this information document. ?n
no event shall either the United States or Battelle have any
^!P°?^bl11^ °r liabilitv for ^y use, misuse, or reliance upon
the information contained herein, nor does either warrant or
otherwise represent in any way the accuracy, adequacy efficacv
or applicability of the contents hereof. S^y, etiicacy,
The reader should consult the water quality standards of a
particular State for exact regulatory language applicable to that
state. Copies of State water quality standards may be obtained
from the State's Water Pollution Control Agency or its
equivalent. * • its
Additional information may also be obtained from the:
Standards Branch
Criteria and Standards Division (WH-585)
Office of Water Regulations and Standards
U.S. Environmental Protection Agency
Washington, D.C. 20460
202-475-7315
This document may be obtained only from the National Technical
Information Service (NTIS) at the following address:
National Technical Information Service
5285 Front Royal Road
Springfield, Virginia 22161
703-487-4650 • .
The NTIS order number is: PB89-141733 •
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DISTRICT OF COLUMBIA
Responsible Agency:
Department of Consumer and Regulatory Affairs
Envoronmentil Control Division
Hater Hygiene Branch
5010 Overlook Avenue, S.H.
Washington 20032
202-767-7370
Standards Available
Hr. Jaies Collier, Chief
Hater Hygiene Branch
Jept. of Consumer and Regulatory Affairs
5010 Overlook Avenue, S.N.
Washington 20032
202-767-7370 Fee: Hailing List:
From;
State Contact:
«r. Jaies Collier
Chief
Hater Hygiene Branch
Jept. of Consumer and Regulatory Affairs
5010 Overlook Avenue, S.H.
Hashington 20032 202-767-7370
State Contacts
no
r ad a t i on
quality achievable above the standards y es n „ ' anJ- f '? "^ °r rest°red to the "ighest
discharges of witmtir, treated or otherSe are Lhib f H 9'f f*1™ Se9i8nt' Ne" "oint sour«
date of designation. Increases in l^™^^?." ******* 5e"ents after the effective
prohibit* in antidegradation segments. Non-point sou essflr.L J'"^9 P°int 50Ur" dischar9es ar*
shall be controlled in conjunction «ith Sectio 200 3 D t ! p f ,' dlSChar9BS a"d C0ibined se«er "verfloNs
management practices and regulatory progra.1 ^ Const^ L L 1 T ' l^ ^^ "P^^tation of best
aUon in the waters of a designated segmen hic ^to n n^S" ?? """^ brid9es and bank
buij to insure that there are not long term ad erse « ua IfT J I" C°nSidered °n a «"
bnifio.1 uses of the segment. Short term «1eT ua "" iiPiir'ent °f the
13
punts
*« *
or
iS
fl. Settle to form objectionable deposits-
0. Float as debris, scum, oil or other matter to form nuisances-
. roduce objectionable odor, color, taste or turSi! '
t0 " ^ PhySi°109iCal
, -Ponses in humans, plants or
- Produce undesirable aquatic life or result in the dominance of nuisance species.
«7, -ay lo, flo- ,ich has a
DC-l
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DISTRICT OF COLUMBIA
present nearby aquatic conunity or present or future water uses. The following factors shall be used in
establishing lixing zones:
(a) Permissible size of the zone shall be dependent on an acceptable atount of iipact and the size of the
receiving water body;
(b) Mixing zones shall be free froi discharged substances that will settle to for§ objectionable deposits;
float to fon unsightly lasses; or produce objectionable color, odor, or turbidity;
(c) fiixing zones shall protect aquatic life in shallow areas which serve as nursery areas;
(d) A lixing zone, or two (2) or lore iixing zones, shall not font a barrier to ligratory aquatic life;
(e) As a guideline, the quality for life within a tixing zone shall be such that the acute toxicity for biota
significant to the area's aquatic life coiiunity is not exceeded;
(f) The positioning of lixing zones shall be done in a §anner that provides the greatest protection to
aquatic life and for the various uses of the water; and,
(g) Hithin the estuary, the iaxiaal dimension of the iixing area shall not exceed ten percent (10Z) of the
numerical value of the crass-sectional area of the waterway and shall not occupy tore than one third (1/3) of
the width of the waterway.
DC-2
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DISTRICT OF COLUMBIA
Classifications:
Class A Waters 5ha11 be protected for pritary contact recreation.
Class B Haters sha11 be Protected for secondary contact recreation and aesthetic
enjoyient.
Class C
Class D
Haters sahll be protected for aquatic life, waterfowl, shore birds and water
oriented wildlife.
Haters shall be protected for use as a raw water source for public water supply.
Class E "aters sha11 be Protected for use as a raw water source for industrial water
supply.
CIass F liters shall be protected for navigational use.
class 6 Sroundwaters are protected for tultiple uses.
DC-3
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DISTRICT OF COLUMBIA
Physical
PH
Upper Value
Lexer Value
Dissolved Oxygen
Lexer Value
Temperature
Upper Value
Temperature Change
Upper Value
Nutrients
Toxic Metals
Arsenic
Upper Value
Cadiiui
Upper Value
Chnmiui - Hexavalent
Upper Value
Cyanide
Upper Value
Iron
Upper Value
Lead
Upper Value
Mercury
Upper Value
Zinc
Upper Value
Beryl liui
Upper Value
Nickel
Upper Value
Seleniui
Upper Value
Silver
Upper Value
Pesticides
flldrin
Upper Value
Dieldrin
Upper Value
Chlardane
Upper Value
DOT 4 Metabolites
Upper Value
Endosulfan
Upper Value
flll Class A Class B Class C
Classes
8.5 8.5 8.5
6.0 6.0 6.0
4.0 ig/L
32.2 C 32.2 C
2.8 C 2.8 C
0.09 ig/L
funct. ug/L
0.01 ig/L
0.003 ig/L
• 1.0 ig/L
funct. ug/L
Narr.
0.05 ng/L
150 ug/L
100 ug/L
0.04 ig/L
1.0 ug/L
0.4 ug/L
0.0019 ug/L
* 0.0043 ug/L
0.001 ug/L
0.01 ug/L
DC-4
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DISTRICT OF COLUMBIA
Endrin
Upper Value
Neptachlor
Upper Value
Toxaphene
Upper Value
Qrganics
Phenol
Upper Value
Phenols - Total Chlorinated!
Upper Value
2,4-Dichlorophenol
Upper Value
Pentachlorophenol
Upper Value
Nitrophenols
Upper Value
2-Chlorophenol
Upper Value
2,4-Diwthylphenol
Upper Value
Phthalate Esters
Upper Value
PCBs
Upper Value
Bacteria
Fecal Colifort
Upper Value
All
Classes
Class A
Class B
Class C
0.0023 ug/L
0.0038 ug/L
0.01 ug/L
0.1 ig/L
3.0 ug/L
200.0 ug/L
7.0 ug/L
20.0 ug/L
100 ug/L
200.0 ug/L
100.0 ug/L
0.01 ug/L
Narr.
Narr.
DC-5
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Physical
pH
Upper Value
Lexer Value
Kutrients
Toxic Metals
Arsenic
Upper Value
Cadiiui
Upper Value
Chroiiui - Total
Upper Value
Copper
Upper Value
Cyanide
Upper Value
Mercury
Upper Value
Zinc
Upper Value
Bariui
Upper Value
Beryl liui
Upper Value
Nickel
Upper Value
Seleniui
Upper Value
Silver
Upper Value
Pesticides
Aldrin
Upper Value
Dieldrin
Upper Value
Chlordane
Upper Value
DDT t Metabolites
Upper Value
Endosulfan
Upper Value
Endrin
Upper Value
Heptachlor
Upper Value
Toxaphene
Upper Value
t
DISTRICT OF COLUMBIA
8.5 8.5
6.0 6.0
Narr.
0.01 tg/L '
0.05 ig/L
1.0 ig/L
0.2 ig/L
0.0001 ig/L
5.0 ig/L
^^
1.0 ig/L AB
^m
0.0004 ug/L
13.0 ug/L
0,01 tg/L
50.0 ug/L
• .00007 ug/L
.00007 ug/L
* 0.0005 ug/L
0.00 ug/L
75.0 ug/L
1.0 ug/L
0.0003 ug/L
^j^
0.0007 ug/L .*•
Drganics
DC-6
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DISTRICT OF COLUMBIA
Phenol
Upper Value
Chlorinated Phenols!
Upper Value
2,4-Dichlorophenol
Upper Value
Pentachlorophenol
Upper Value
Nitrophenols
Upper Value
2-Chlorophenol
Upper Value
2,4-Diiethyl Phenol
Upper Value
PCBs
Upper Value
Bacteria
Fecal Colifori
Upper Value
Class D
0.3 ag/L
0.04 ug/L
0.3 ug/L
30.0 ug/L
13.0 ug/L
0.1 ug/L
400.0 ug/L
.00008 ug/L
Narr.
Class E
Class F
Class 6
Narr.
DC-7
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