United States
Environmental Protection Office of Water EPA 822/F-93-011
Agency 4304 December 1993
DRINKING WATER REGULATIONS
AND HEALTH ADVISORIES
Recycled/Recyclable
Printed with Soy/Canola Ink on paper that
contains at least 50% recycled fiber
-------
DRINKING WATER REGULATIONS
AND HEALTH ADVISORIES
by
Office of Water
U.S. Environmental Protection Agency
Washington, D.C.
202-260-7571
SAFE DRINKING WATER HOTLINE
1-800-426-4791
Monday thru Friday, 8:30 AM to 5:00 PM EST
December 1993
-------
LEGEND
Abbreviations column descriptions are:
MCLG - Maximum Contaminant Level Goal. A non-enforceable
concentration of a drinking water contaminant that is protective of
adverse human health effects and allows an adequate margin of
safety. ;
MCL - Maximum Contaminant Level. Maximum permissible level of a
contaminant in water which is delivered to any user of a public
water system.
RfD - Reference Dose. An estimate of a daily exposure to the human
population that is likely to be without appreciable risk of deleterious
effects over a lifetime.
DWEL - Drinking Water Equivalent Level. A lifetime exposure concentration
protective of adverse, non-cancer health effects, that assumes all
of the exposure to a contaminant is from a drinking water source.
(*) The codes for the Status Red and Status HA columns are as follows:
F - final
D - draft
L - listed for regulation
P - proposed
T - tentative
Other codes found in the table include the following:
NA - not applicable
PS - performance standard 0.5 NTU - 1.0 NTU
treatment technique
No more than 5% of the samples per month may be positive. For
systems collecting fewer than 40 samples/month, no more than 1
sample per month may be positive.
guidance
Large discrepancies between Lifetime and Longer-term HA values may occur
because of the Agency's conservative policies, especially with regard to
carcinogenicity, relative source contribution, and less than lifetime
exposures in chronic toxicity testing. These factors can result in a
cumulative UF (uncertainty factor) of 10 to 1000 when calculating a
Lifetime HA.
» # *
-------
Drinking Water Standards and Health Advisories
December 1993
Page 1
. - Chemical*
-;
ORGANICS
Acenaphthene
Acifluorfen
Acrylamide
Acrylonitrile
Adipate (diethylhexyl)
Alachlbr \^.^-'-:'f-< - ..:••• .
Aldicarb
Aldicarb sulfone
Aldicarb sulfoxide
Aldrin
Ametryn
Ammonium sulfamate
Anthracene (PAH)
Atrazine
Baygon
Bentazon
Benz(a)anthracene (PAH)
Benzene
Benzo(a)pyrene (PAH)
Benzo(b)fluoranthene (PAH)
Benzo(g,h,i)perylene (PAH)
Benzo(k)fluoranthene (PAH)
bis-2-Chloroisopropyl ether
Brbmaci! • ^'l^^' ' '•'• •j-&\f:;^&
Bromobenzene
Status
Reg.
-
T
F
T
F
f
D
D
D
•
-
-
-
F
-
T
P
F
F
P
-
P
-
.,..L • .
L
Standards
MCLG
(mg/l)
-
zero
zero
zero
0.4
zero
0.007
0.007
0.007
-
-
-
-
0.003
-
0,02
zero
zero
zero
zero
-
zero
-'
-•."'••.
-
MCL
(mg/l)
-
-
TT
-
0.4
0.002
0.007
0.007
0.007
• • • •
-
•
-
0.003
-
-
0.0001
0.005
0.0002
0.0002
-
0.0002
-
.- _....; ...... ..;.
-
Status
HA
-
F
F
0
-
'•••*'••••
D
D
D
D
F
F
-
F
F
F
-
F
-
-
-
-
F
'•.•;;; F--:-'
D
Hearth
10-kg Child
longer-
One-day Ten-day term
(mg/l) (mg/l) (mg/l)
.
2 2 0.1
0.2 0.2 0.01
.
20 20 20
0.1 0.1
.
' -
.
o.ppos; O.OQ03 o;oqo3
9 9 0.9
20 20 20
-
0.1 0.1 0.05
0.04 0.04 0.04
0,3 0.3 0.3
-
0.2 0.2
-
.
-
-
444
-:. 5" •'••- -; .5.. :;;•;•••. :;;,. 3 "'. v
-
Advisories
70-kg Adult
Longer*
term
(mg/l)
-
0.4
0.04
-
60
-
-
. ... : :.
-
0.0003
3
80
-
0.2
0.1
0.9
-
-
-
-
-
-
13
-9;,..-: Y:;'
-
RfO
(mg/kg/
day)
0.06
0.013
0.001
•'
0.6
0:01
0.001
:POP1
0.001
O.OOOQ3
0.009
0.28
0.3
0.035
0.004
0.0025
-
'-
-
-
-
-
0.04
0.13
-
DWEL
(mg/l)
-
0.4
0.04
-
20
0.4
0.035
0.035
0.035
0.001
0.3
8
-
0.2*
0.1
0.09
-
-
-
• -
-
-
1
• ;5... :.-,..;
-
Ufetime
(mg/l)
-
-
-
-
0.4
: - -. - :
0.007
0.007
0.007
:' •''. '".:'.:•
0.06
2
-
0.003*
0.003
0.02
-
-
-
-
-
-
0.3
0.03
-
mg/l at "10"4
Cancer Risk
.
Q.1
0.001
Or006
3
0.04
-
• - , • •
-
0,0002
-
•- . -
-
-
-
-
-
6.1
-
': .',.'
-
-
-
'- ' :-
-
Cancer
Group
-
B2
B2
81*
C
B2
D
D
D
B2
D
D
D
C
C
D
B2
A
B2*
B2
D
B2
D
C
-
* Under review.
NOTE: Anthracene and Benzo(g,h,i)perylene — not proposed in Phase V.
NOTE: Changes from the last version are noted in Italic and Bold Face print.
-------
Drinking Water Standards and Health Advisories
December 1993
Page 2
Chemicals
Bromochloroacetonitrile
Bromochloromethane
Bromodichloromethane (THM)
Bromoform (THM)
Bromomethane
Butyl benzyl phthalate (PAE)
Butylate
Butylbenzene n-
Butylbenzene sec-
Butylbenzene tert-
Carbaryl
Carbofuran
Carbon tetrachloride
Carboxin ;'." .'^;.: -^J;\^
Chloral hydrate
Chloramben
Chlordane
Chlorodibromomethane (THM)
Chloroethane
Chloroform (THM)
Chloromethane
Chlorophenol (2-1
p-Chlorophenyl methyl
sulfide/sulfone/sulfoxide
Chloropicrirv '
Chlorothalonil
Chlorotoluene o-
Chlorotoluene p-
Chlorpyrifos
Chrysene (PAH)
Cyanazine
Standards
Status
Reg.
L
-
T
T
T
P
-
-
-
-
-
• .•f-;;;-'
F
' 'i\: •-:•& f
-"T" ••••"
-
F
T
L
T
L
-
-
•""•L" •
-.
L
L
-
P
T
MCLG
(mg/l)
-
-
zero
zero
-
zero
-
-
-
-
-
0.04
zero
.; -
0.06
-
zero
zero
-
zero
-
-
-
' -
-
-
zero
0.001
MCL
(mg/l)
-
-
0.1* +
0.1* +
-
0.1
-
-
-
-
-
0.04
0.005
-
-
-
0.002
0.1* +
-
0.1* +
-
-
- •
- •-
'> . •"
0.0002
-
Status
HA
D
F
D
D
F
-
F
D
D
D
F
F
F
F
D
F
F
D
D
D
F
D
,** .
;••.•:•
F
F
F
F
-
D
Health
10-kg Child
Longer-
One-day Ten-day term
(mg/l) (mg/l) (mg/l)
.
50 1 1
7 7 4
522
0.1 0.1 0.1
.
2 21
-
.
- ' -
i i 1
0.05 0.05 0.05
4 0.2 0.07
1 1 1
7 1.4 0.2
3 3 0.2
0.06 0.06
772
. •
4 4 .0.1
9 0.4 0.4
0.05. 0.05 0,05
- •_
••'.-• •...-•:;- ' - .':•' ::.:-;-' 1.^4. ••:.-;
0.2 0.2 0.2
2 22
222
0.03 0.03 0.03
-
0.1 0.1 : ;,0.02;
Advisories
70-kg Adult
Longer-
term
(mg/l)
-
5
13
6
0.5
-
4
-
-
1
0.2
0.3
4
0.6
0.5
-
8
-
0.4
1
0.2
-
:-V:4:-X.-:: •
0.5
7
7
0.1
-
0,07
RfO
(mg/kg/
day)
-
0.013
0.02
0.02
0.001
0.2
0.05
-
-
-
0.1
0.005
0.0007
0.1
0.0002
0.015
0.00006
0.02
-
0.01
0.004
0.005
-
:- •-;-:- ," •'.":•
0.015
0^02
0.02
Q.OQ3
-
; 0.002
DWEL
(mg/l)
-
0.5
0.7
0.7
0.04
6
2
-
-
-
4
0.2
0.03
4
0.07
0.5
0.002
0.7
-
0.4 '
0.1
0.2
-
: •:•-.-:' '"''. :,
0:5
; 0.7
0.7
0.1
- '
' ." 0:07 :
Lifetime
(mg/l)
-
0.09
-
-
0.01
-
0.35
-
-
-
0.7
0.04
-
0.7
0.06
0.1
-
0.06
-
- •
0.003
0.04
—
:: -:;'V''' ..-•
- '
0.1;
0.1
0.02
- -,'
0.001
mg/l at 10*
Cancer Risk
-
-
0.06
0.4
-
-
-
-
-
-
-
-
0.03
-
' - •
-
0.003
-
-
o;e
-
-.
-"
';• -.;... : •:••;;:.. -
0.15
'.'. .••'.V-;;-'::j;:'::-
•/ :-. .••"•';'-:.:J-
-
- ••'•• '-,•• :•:•..
Cancer
Group
-
-
B2
B2
O
C
D
-
-
-
D
E
B2
D
C
D
B2
C
-
B2
C
0
D
'--. . . .
B2
D
D
D
B2
C
Current
1 A HA
L + Total cannot exceed 0.1 for all THMS NOTE: Chrysene was
ot be developed due to insufficient data; a "Database Deficiency Rf
^oposed in second option.
has been published.
-------
Drinking Water Standards and Health Advisories
December 1993
Page 3
Chemicals
Cyanogen chloride
Cymene p-
2,4-D
DCPA (Dacthal)
Dalapon
Di[2-ethylhexyl]adipate
Diazinon
Diberu(a,h)anthracene (PAH)
Dibromoacetonitrile
Dibromochloropropane (DBCP)
Dibromomethane
Dibutyl phthalate (PAE)
Dicamba
Dichloroacetaldehyde
Dichloroacetic acid
Dichloroacetonitrile
Dichlorobenzene o-
Dichlorobenzene m- *
Dichlorobenzene p-
Dichlorodifluoromethane
Dichloroethane (1,1-1
Dichloroethane (1,2-)
Dichloroethylene (1,1-)
Dichloroethylene (cis-1,2-)
Dichloroethylene (trans-1,2-!
Dichloromethahe
Dichlorophenol (2,4-)
Dichloropropane (1,1-)
Dichloropropane (1,2-)
Dichloropropane (1,3-)
Standards
Status
Reg.
L
-
F
L
F
F
-
P
L
F
L
-
L
L
T
L
F
F
F
L
L
F
F
F
F
F
-
- •
F
L
MCLG
(mg/l)
-
-
0.07
-
0.2
0.4
-
zero
-
zero
-
-
-
-
zero
-
0.6
0.6
0.075
-
-
zero
0.007
0.07
0.1
zero
-
-
zero
-
MCL
(mg/l)
-
-
0.07
-
0.2
0.4
-
0.0003
-
0.0002
-
-
-
-
-
-
0.6
0.6
0.075
-
-
0.005
0.007
0.07
0.1
0.005
-
- '
0.005
-
Status
HA
-
D
F
F
F
-
F
-
D
F
-
-
F
D
D
D
F
F
F
F
D
F
F
F
F
F
D
D
F
D
Health
, 10-kg Child
Longer-
One-day Ten-day term
(mg/l) (mg/l) (mg/l)
-
.
1 0.3 0.1
80 80 5
3 3 0.3
20 20 20
0.02 0.02 0.005
.
222
0.2 0.05
-
.
0.3 0.3 0.3
-
1 1 1
1 1 0.8
999
9 9 9
10 10 10
40 40 9
.
0.7 0.7 0.7
2 1 1
433
20 2 2
10 : 2 -
0.03 0.03 0.03
-
0.09
-
Advisories
70-kg Adult
Longer*
. term
(mg/l}
-
-
0.4
20
0.9
60
0.02
-
8
-
-
-
1
-
4
3
30
30
40
30
-
2.6
4
11
6
.-..'-.' ••:":!; : .;.
0.1
-
-
-
RfD
(mg/kg/
day)
-
-
0.01
0.5
0.026
0.6
0.00009
-
0.02
-
-
0.1
0.03
-
0.04
0.008
0.09
0.09
0.1
0.2
-
0.009
0.01
0.02
0:06
0.003
-
-
DWEL
(mg/l)
-
-
0.4
20
0.9
20
0.003
••••'••:• •:'• •:;
6.8
•., -,;: • f • :
-
4
1
-
0.1
0.3
3
3
4
5
-
-
0.4
0:4
0.6
2
0.1
-
-
-
Lifetime
(mg/l)
-
-
0.07
4
0.2
0.4
0.0006
:•.:•:;- •':...;. ;
0.02
;.;-;: :•
-
-
0.2
-
-
0.006
0.6
0.6
0.075
1
-
-
0.007
0.07
0.1
0.02
'
-
. .-
mg/l at 10^
Cancer Risk
-
-
-
-
-
3
-
-
-
0.003
-
-
-
-
-
-
-
-
-
-
-
0.04
»
-
-
0.5
-
-•
0.05
-
Cancer
Group
-
-
D
D
D
C
E
82
C
B2
D
D
D
-
B2
C
D
D
C
D
-
B2
C
D
D
B2
D
-
B2
-
The values for m-dichlorobenzene are based on data for o-dichlorobenzene.
-------
Drinking Water Standards and Health Advisories
December 1993
Page 4
Chemicals
Dichloropropane (2,2-)
Dichloropropene (1,1-)- -
Dichloropropene (1,3-)
Dieldrin
Diethyl phthalate (PAE)
Diethylene glycol dinitrate
Diethylhexyl phthalate (PAE)
Plisopropylirnesthyjphosphohate
Dimethrin
Dimethyl methylphosphonate
Dimethyl phthalate (PAE)
1 ,3-Dinitrobenzene
Dinitrotoluene (2,4-)
Dinitrotoluene (2,6-)
tg 2,6 & 2,4 dinitrotoluene * * *
Dinoseb
Dioxane p-
Diphenamid
Diphenylamine
Diquat
Disulfoton
Pjthiane (1,4-)
Diuron
Endothall
Endrin
Epichlbrohydrin
Ethylbenzene
Ethylene dibromide (EDB)
Ethylene glycol
ETU
Fenamiphos
Standards
Status
Reg.
L
L
T
-
-
-
F
-
-
-
-
-
L
L
-
F
-
-
-
F
-
-
-
F
F
F
F
F
-
L
-
MCLG
(mg/l)
-
—
zero
-
-
-
zero
-
-
-
-
-
-
-.
-
0.007
-
-
-
0.02
-
-
-
0.1
0.002
zero
0,7
zero
.-
-
-
MCL
(mg/l)
-
-•
-
-
-
-
0.006
-
-
-
-
-
-
-
-
0.007
-
-
-
0,02
-
-
-
0.1
0.002
TT
0.7
0.00005
-
-
-
Status
HA
D
D
F
F
D
* *
D
F
F
F
-
F
F
F
-
F
F
F
F
-
F
F
F
F
F
F
F
F
F
F
F
Health
10-kg Child
One-day
(mg/l)
-
0.03
0.0005
-
-
-
.8' .:.:• •?•;•
10
2
-
0.04
0.50
0.40
-
0.3
4
0.3
1
-
0.01
0.4
1
0.8
0.02
0.1
30
0.008
20
0.3
0.009
Ten-day
(mg/l)
-
• -
0.03
0.0005
-
-
-
'W h'^-
10
2
-
0.04
0.50
0.40
-
0.3
0.4
0.3
1
-
0.01
0.4
1
0,8
0.02
0.1
3
0.008
6
0.3
0.009
Longer-
term
(mg/l)
-
-
0.03
0.0005
-
-
-
• e/^r
10
2
-
0.04
0.30
0.40
-
0.01
-
0.3
0.3
-
0.003
0.4
0.3
0.2
0.003
0.07
1
-
6
0.1
0.005
Advisories
70-kg Adult
Longer-
term
(mg/l)
-
-
0.09
0.002
-
-
-
30
40
6
-
0.14
1
1
-
0.04
-
1
1
-
0.009
1
0.9
0.2
0.01
0.07
3
-
20
0.4
0.02
RfD
(mg/kg/
day)
-
-
0.0003
0.00005
0.8
-
0.02
0.08
0.3
0.2
-
0.0001
0.002
0.001
-
0.001
-
0.03
0.03
0.0022
0.00004
0.01
0.002
0.02
0.0003
0.002
0.1
-
2
0.00008
0.00025
DWEL
(mg/l)
-
-
0.01
0.002
30
-
0.7
-:3; -:• •
10
7
-
0.005
0.1
0.04
-
0.04
-
1
1
0.08"
0.001
0.4
0.07
0.7
o'.oi
0.07
3
-
40
0.003
0.009
Lifetime
(mg/l)
-
-
-
-
5
-
-
0.6
2
0.1
-
0.001
-
-
-
0.007
-
0.2
0.2
0.02
0.0003
0.08
0.01
6,1
0.002
. -
0.7
-
7
- :
0.002
mg/l at 10*
Cancer Risk
-
-
0.02
0.0002
-
-
0.3
0 ,.-:' ' .•:.'.
-
0.7
-
-
-
0.005
-
0.7
-
- .
-
-
-.
-
-
0.4
-
0^00004
-
0.03
-
Cancer
Group
-
-
B2
82
D
- ...
B2*
D
D
c
D
D
-
.- V"
B2
P
B2
D •':
D
P-': •::.
E
0
D
D
D
B2
D
B2
D
B2
D
* Under review
* * * tg =
1 A HA will not be developed due to insufficient data; a "Database Deficiency Report" has been published.
grade
-------
Drinking Water Standards and Health Advisories
December 1993
Page 5
Chemicals
Fluometrori
Fluorene (PAH)
Fluorotrichloromethane:
Fog Oil
Fonofos
Formaldehyde
Gasoline, unleaded (benzene)
Glyphosate
Heptachlor
Heptachlor epoxide
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclopentadiene
Hexachloroethane
Hexane (n-)
Hexazinone
HMX
lndeno(1,2,3,-c,d)pyrene (PAH)
Isophorone
Isopropyl methylphosphonate
Isopropylbenzene
Lindane
Malathioh ";•';. ::, ;:'rV?-";;iv\V-;-^
Maleic hydrazide
MCPA : ••;/-•••: '•- :.:::.""-;'; M;
Methomyl
Methoxychlor
Methyl ethyl ketorie
Methyl paratfaon
Status
Reg.
-
-
L
-
-
-
-
F
F
F
F
T
F
L
-
-
-
P
L
-
-
F
''.:. . •- ••••'::
-
:', '•-:•• '.;
L
F
Standards
MCLG
(mg/l)
-
-
-
-
-
-
-
0.7
zero
zero
zero
0.001
0.05
-
-
-
-
zero
-
-
-
0.0002
.: "-}; -i-;::"";
-
;:- - ' : :
0.04
MCL
(mg/l)
-
-
-
-
-
-
-
0.7
0.0004
0.0002
0.001
-
0.05
-
-
-
-
0.0004
-
-
-
0.0002
:••"•:- ;- '••': ''?i
-
•-:'• •' •
-
004
Status
HA
F
-
F
D
F
D
D
F
• :F:s -
F
F
F
-
F
F
F
F
D
F
D
D
F
. *.$";•
F
•.p, .;-
F
f
f
F
Health
10-kg Child
One-day
(mg/l)
2
-
7
-
0.02
10
-
20
0.01
0.01
0.05
0.3
-
5
10
3
5
-
15
30
-
1
0.2 :
10
0.1
0.3
0.05
03
Ten-day
(mg/l)
2
-
7
-
0.02
5
-
20
'•• Q-P1 V; •
-
0.05
0.3
-
5
4
3
5
-
15
30
-
1
0-2
10
0.1
0.3
0.05
0.3
Longer-
term
(mg/l)
2
-
3
-
0.02
5
-
1
0.005
0.0001
0.05
0.1
-
0.1
4
3
5
-
15
30
-
0.03
o;?
5
0.1
0.3
0.05
-
0.03
Advisories
*
70-kg Adult
Longer-
term
(mg/l)
5
-
10
-
0:07
20
-
1
0.005
0.0001
0.2
0.4
- -
0.5
10
9
20
-
15
100
-
0.1
0,8
20
0:4
0.3
0.2
-
0.1
RfO
(mg/kg/
day)
0.013
0.04
0.3
-
0.002
0.15
-
0.1
0.0005
TF-5
0.0008
0.002
0.007
0.001
-
0.033
0.05
-
0.2
0.1
-
0.0003
0.02
0.5
0.0015
0.025
0.005
0.00025
DWEL
(mg/l)
0.4
-
10
-
0.07
5
-
4
0.02
0.0004
0.03
0.07
0.2
0.04
-
1
2
-
7
4.0
-
0.01
0.8
20
0:05
0.9
0.2
-
0.009
Lifetime
(mg/l)
0.09
-
2
-
0.01
1
0.005
0.7
'
-
-
0.001
-
0.001
-
0.2
0.4
-
0.1
0.7
-
0.0002
• 0.2
4
0.01
0.2
0.04
-
0.002
mg/l at 10"*
Cancer Risk
-
-
-
-
-
-
-
0.0008
0.0004
0.002
-
- -;
-
;: . :
-
;-'-;. ;.
-
4 '• •-:
-
•'.-
-
-.- :-.:• '•; ' :.;
-
. -
-
-
-
-
: Cancer
Group
D
D
0
-
D
B1
-
E
B2
B2
B2
C
D
C
D
D
D
B2
C
D
•-
C
P.
D
E
D
D
*
D
Under review
-------
Drinking Water Standards and Health Advisories
December 1993
Page 6
Chemicals
Methyl tert butyl ether
Metolachlor
Metribuzin
Monochloroacetic acid
Monochlorobenzene
Naphthalene
Nitrocellulose (non-toxic)
Njtrpguanidine: ; : ;
Nitrophenol p-
Oxamyl (Vydate)
Paraquat
Pentachloroethane
Pentachlorophenol
Phenanthrene (PAH)
Phenol
Picloram
Polychlorinated biphenyls (PCBs)
Prometon
Pronamide
Propachlor
Propazine
Propham
Propylbenzene n-
Pyrene (PAH)
RDX
Simazine
Styrene
2,4,5-T
2,3,7,8-TCDD (Dioxin)
Standards
Status
Rag.
L
L
L
L
F
-
-
- -
-
F
-
-
F
-
-
F
F
L
-
-
-
-
-
-
-
F
F
L
F
MCLG
(mg/l)
-
-
-
-
0.1
-
-
-
-
0.2
-
-
zero
-
-
0.5
zero
-
-
-
-
-
-
-
-
0.004
0.1
.-
zero
MCL
(mg/l)
-
- .
-
-
0.1
-
-
-
-
0.2
-
- ; . .; •
0^001
•
-
0.5
0.0005
-
-
-
-
-
-
-
-
0.004
0.1
-
3E-08
Status
HA
D
F
F
D
F
F
F
F
F
F
F
D
F
-
D
F
P
F
F
F
F
F
D
-
F
F
F
F
F
Health
10-kg Child
One-day
(mg/l)
3
2
5
-
2
0.5
-
10
0.8
0.2
0.1
-
1
-
6
20
-
0.2
0.8
0.5
1
5
-
-
0.1
0.07
20
0.8
1E-06
Ten-day
(mg/l)
3
2
5
:'
2
0.5 ;
-
10
0.8
0.2
0.1
-
0.3
-
6
20
-
0.2
0.8
0.5
1
5
-
-
0.1
0.07
2
0.8
1E-07
Longer-
term
(mg/l)
0.5
2,":>'-:.::
0.3
-- • -.-.'•
2
- 'Q#n.: •
-
10: ;::.r
0.8
0.2
0.05
-
0.3
*
6
0.7
-
0.2
0.8
0.1
0.5
5
-
-
0.1
0.07
2
0.8
1E-08
Advisories
70-kg Adult
Longer-
term
(mg/l)
2
5
0.9
7
. 1;/.: ••".:-
-
40
3
0.9
0.2
-
1
-
20
2
-
0.5
3
0.5
2
20
-
-
0.4
0.07
7
1
4E-08
RfO
(mg/kg/
day)
0.005
0.15
0.025
' .:-;••;-.'.' ,;:-. :''
0.02
P.0p4
-
0.1
0.008
0.025
0.0045
-
0.03
-
0.6
0.07
-
0.015s
0.075
0.013
0.02
0.02
-
0,03
0.003
0.005
0.2
0.01
1E-09
DWEL
(mg/l)
0.2
•' 5 ';'
0.9
V:i'Vv;.'- ./
0.7
o.v
-
.:,A;vV-..:, •
0.3
0.9
0.2
-
1
-
20
2
-
0.5*
3
0.5
0.7
0.6
-
-
0.1
o:2.;:'.::|;
7
0.35 ;
4E-08
Lifetime
(mg/l)
0.04
0.1
0.2
-. ::v •
0.1
0.02
-
0.7
0.06
0.2
0.03
-
-
-
4
0.5
-
0.1 •
0.05
0.09
0.01
0.1
-
-
0.002
: 0.004
0.1
0.07
-
mg/l at 10**
Cancer Risk
-
-
-
'•••.. •
-
-
-
-
-
..... -.',..: . •
-
•-•'••
0.03
' . . -•
-
- - .: :
0.0005
:..:
-
.'••••••
-
• • >:,•:. •.:•.'•' ";••
-
: ,-'::.'.: "•••,"
0.03
• ' ';-":':. •-
-
V.:;V..^.: /':':.--,
2E-08
Cancer
Group
D
C
D
-
0
D
-
D
D
E
E
B2
D
D
B2
D
C
D
C
D
-
D
C
c
C
D
B2
-------
Drinking Water Standards and Health Advisories
December 1993
Page?
Chemicals
Tebuthiuron
Terbacil
Terbufos
Tetrachloroethane (1,1,1,2-)
Tetrachloroethane (1,1,2,2-)
Tetrachloroethylene
Tetranitromethane
Toluene
Toxaphene
2.4,5-TP
1,1,2-Trichloro-1,2,2-
trifluoroethane
Trichloroacetic acid
Trichloroacetonitrile
Trichlorobenzene (1,2,4-)
Trichlorobenzene (1,3,5-)
Trichlproethane (1,1,1-)
Trichloroethane (1,1,2-)
Trichloroetharipl (2,2,2-) .
Trichioroethylene
TricHiorbphenpl (2,4,6-)
Trichloropropane (1,1,1-)
Trichlbrbprppane (1,2,3-)
Trifluralin
Trimethylbenzene (1,2,4-)
Trimethylbenzene (1,3,5-)
Trinitroglycerol
Trinitrotoluene
Vinyl chloride
Xylenes
Standards
Status MCLG MCL
Reg. (mg/l) (mg/0
.
-
.
L
L
F zero 0.005
-
F 1 1
F zero 0.003
F 0.05 0.05
.
T 0.1
L
F 0.07 0.07
.
F 0.2 0.2
F 0.003 0.005
L
F zero 0.005
L
.
L
L r
.
-
F zero 0.002
F 10 10
Status
HA
F
F
F
F
D
F
* *
F
F
F
-
D
D
F
F
F
F
-
F
D
D
F
F
D
D
F
F
F
F
Health
10-kg Child
One-day
(mg/l)
3
0.3
0.005
2
-
2
-
20
0.5
0.2
-
4
0.05
0.1
0.6
100
0.6
-
-
-
-
0.6
0.08
• -
-
0.005
0.02
3
40
Ten-day
(mg/l)
3
0.3
0.005
2
-
2
-
2
0.04
0.2
-
4
0.05
0.1
0.6
40
0.4
-
-
-
-
0.6
0.08
-".
-
0.005
0.02
3
40
Longer-
term
(mg/l)
0.7
0.3
0.001
0.9
-
1
-
2
-
0.07
-
4
-
0,1
0.6
40
0.4
-
-
-
-
0.6
0.08
:-
-
0.005
0.02
0.01
40
Advisories
70-kg Adult
Longer-
term
(mg/l)
2
0.9
0.005
3
-
5
-
7
-
0.3
-
13
-
0.5
2
100
1
-
-
-
-
2
0.3
.;-'•'••'•..: .,.'•
-
0.005
0.02
0.05
100
RIO
(mg/kg/
day)
0.07
0.013
0.00013
0.03
-
0.01
-
0.2
0.1
0.0075
-
0.1
-
0.01
0.006
0.035
0.004
-
-
-
-
0.006
0.0075
h-' •:••:•' : '•
-
-
0.0005
-
2 '.-.:.
DWEL
(mg/l)
2
0.4
0.005
1
-
0.5
-
7
0.0035
0.3
-
4.0
-
0.4
0.2
1
0.1
-
0.3
-
-
0.2
. 0.3
.• • -. :, : -
-
:- '
0.02
- . . • .
60 :
Lifetime
(mg/l)
0.5
0.09
0.0009
0.07
-
-
-
1
-
0.05
-
0.3
-
0,07
0.04
0.2
0.003
-
-
-
-
0.04
0.005
• - •- .
-
0.005
0.002
-
10
mg/l at 10**
Cancer Risk
-
-
-
0.1
-
0.07
-
-
0.003
-
-
-
-
-
-
-
-
'
0.3
0.3
-
-
- 0.5
,.'-.-•
-
• - ' '... • ••
0.1
0.0015
• . •--.. . •• •••. •
: Cancer
Group
0
E
D
C
-
-
-
D
B2
D
-
C
-
o
D
D
C
-
B2
B2
-
B2
C
-
-
1 -
C
A
b
* A HA will not be developed due to insufficient data; a Database Deficiency Report has been published.
-------
Drinking Water Standards and Health Advisories
December 1993
Page 8
Chemicals
INORGANICS
Aluminum
Ammonia
Antimony
Arsenic
Asbestos (fibers/I >10//m
length)
Barium
Beryllium
Boron
Cadmium
Chloramine
Chlorate
Chlorine
Chlorine dioxide
Chlorite
Chromium (total)
Copper
Cyanide
Fluoride*
Hypochlorite
Hypochlorous acid
Lead (at tap)
Manganese
Mercury (inorganic)
Molybdenum
Nickel
Nitrate (as N)
Standards
Status
Reg.
L
-
F
*
F
F
F
L
F
T
L
T
T
L
F
F
P
F
T
T
F
L
F
L
F
F
MCLG
(mg/1)
-
-
0.006
-
7MFL
2
0.004
.
0.005
4
-
4
0.08
-
0.1
1.3
0.2
4
4
4
zero
-
0.002
-
0.1
10
MCL
(mg/l)
-
-
0.006
0.05
7 MFL
2
0.004
- : -.:•.-.
0.005
-
-
-
-
-
0.1
TT"*
0.2
4
-
-4
TT**
-
0.002
-
0.1
10
Status
HA
D
D
F
D
-
••;-• F':U:
D
:V:.P;':
F
D
D
D
D
D
F
-
F
-
-
-
-
D
F
D
F
F
Health
10-kg Child
Longer-
One-day Ten-day term
(mg/l) (mg/l) (mg/l)
.
,
0.07 0.07 o.or
-
.
:M-.-:>. : : ^V;,-^:-.^,^-
30 30 4
..:. 4v.::':;- :.'.:> P';9.: •..-•:::. 6:9:"- "
0.04 0.04 0.005
1 1 1
.
.
.
.
1 1 0.2
.
0.2 0.2 0.2
,
-
-
.
.
-
0.08 6.01 ".;
1 1 0.5
10*' -v,,'.T..-,:' :,-'
Advisories
70-kg Adult
Longer-
term
(mg/l)
-
-
0.015
-
-
"'.-•••I •'•if
20
' 3 ••.. ; :
0.02
1
-
-
-
-
0.8
-
0.8
-
-
-
-
-
0.002
0,05
1.7
•.:-':. ;.:. ;,;.'•
RfD
(mg/kg/
day)
-
-
0.0004
-
0,07
6.005
p.09
0.0005
0.1
-
0.08
0.003
-
0.005
0.022
0.12
-
-
-
0.14/
0.005
0.0003
Q-P05;;
0.02
T.6 . ,:..
OWEL
(mg/l)
-
-
0.07
-
-
•I:.;':* ;/'.-.::.,::
0.2
3 :;r:; :
0.02
3.3
-
-
0.1
-
0.2
-
0.8
-
-
-
-
-
0.01
•/:.;o.2p.o
0.6
•••<'''..'•• .--'•• *
Lifetime
(mg/l)
-
30
0.003
-
-
2 :•:.-• -
-
0.6
0.005
2.6
-
-
0.08
-
0.1
-
0.2
-
-
-
-
-
0.002
0.04 ::
0.1
.•;-'
mg/l at KV4
Cancer Risk
-
-'
-
0.002
700 MFL
-.'•• .',.
0.0008
*
-
-
-
-
-
;
-
-
-
-
-
-
-
-
-
.''• :./-.'; - .
-
"':. ' * . •• '
Cancer
Group
-
D
D
A
A
D
B2
D
D
-•
-
D
D
D
D
D
D
-
B2
D
D
D
*
Under review.
* Copper,
Lead —
fction level 1.3 mg/L
m level 0.015 mg/L
-------
Drinking Water Standards and Health Advisories
December 1993
Page 9
Chemicals
Nitrite (as N)
Nitrate + Nitrite (both as N)
Selenium
Silver
Sodium
Strontium
Sulfate
Thallium
Vanadium
White phosphorous
Zinc
Zinc chloride (measured as Zinc)
RADIONUCUOES
Beta particle and photon
activity (formerly
man-made radionuclides)
Gross alpha particle activity
Radium 226
Radium 228
Radon
Uranium
Status
Reg.
F
F
F
-
-
L
P
F
L
-
L
L
P
P
P
P
P
P
Standards
MCLG
(mg/l]
1
10
0.05
-
-
* *
0.0005
-
-
-
-
zero
zero
zero
zero
zero
faro
MCL
(mg/l)
1
10
0.05
-
-
-
* •
0.002
-
-
-
-
4 mrem
15pCi/L
20 pCi/L
20 pCi/L
300pCi/L
20;/g/L
Status
HA
F
F
-
0
D
D
-
F
D
F
F
F
-
-
-'
-
-
-
Health Advisories
10-kg Child
One-day
(mg/l)
-
--
-
0.2
-
25
-
0.007
-
-
6
6
-
-
-
-
-
Longer-
Ten-day term
(mg/l) (mg/l)
1*
-
-
0.2 0.2
-
25 25
-
0.007 0.007
-
-
6 3
6 x" 3 ;
-
-
-
-
- '
-
Longer- RfO
term (mg/kg/
(mg/l) day)
0.16*
-
0.005
0.2 0.005
-
90 0.6
-
0.02 0.00007
-
0.00002
12 0.3
12 0.3
-
-
-
-
-
0.003
70-kg Adult
DWEL Lifetime mg/l at 104
(mg/l) (mg/l) Cancer Risk
.
.
.
0.2 0.1
20***
90 17
.
0.002 0.0004
.
0.0005 0.0001
11 2
11 2
4 mrem/y
15pCi/L
20 pCi/L
20 pCi/L
150pCi/L
70;/g/L
Cancer
Group
•
•
-
D
-
D
-
-
D
D
D
D
A
A
A
A
A
A
* Under review.
* * Deferred.
'** Guidance.
-------
Secondary Maximum Contaminant Levels
December 1993 Page 10
Chemicals
Aluminum
Chloride
Color
Copper
Corrosivity
Fluoride*
Foaming agents
Iron
Manganese
Odor
PH
Silver
Sulfate
Total dissolved solids (TDS)
Zinc
Status
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
SMCLs (mg/L)
0.05 to 0.2
250
1 5 color units
1.0
non-corrosive
2.0
0.5
0.3
0.05
3 threshold odor numbers
6.5 - 8.5
0.1
250
500
5
Status Codes: P — proposed, F — final
* Under review.
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Microbiology
December 1993
Page 11
Cryptosporidium
Giardia lamblia
Legionella
Standard Plate Count
Total Coliforms (after 12/31/90)
Turbidity (after 1 2/31/90)
Viruses
Status
L
F
F>
F>
F
; '. F .' •
p
MCLQ f
-
zero
zero
NA
zero
NA
zero
:WMCit>>
-
;'.' :: • TT 5 -:f
TT
•' TT. . y.
* *
PS
TT
Key: PS, TT, F, defined as previously stated.
Final for systems using surface water; also being considered for
regulation under groundwater disinfection rule.
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