Drinking Water Standards and Health Advisories Summer 2009 Standards 10-kg Child Chemicals
Cyanogen chloride 2,4-D (2,4-
1
dichlorophenoxyacetic acid) DCPA (Dacthal)
Dalapon (sodium salt) Di(2-ethylhexyl)adipate
Di(2-ethylhexyl)phthalate Diazinon
Dibromochloromethane (THM) Dibromochloropropane (DBCP) Dibutyl phthalate Dicamba
Dichloroacetic acid Dichlorobenzene o- Dichlorobenzene — Dichlorobenzene p-
4
Dichlorodifluoromethane Dichloroethane (1,2-) Dichloroethylene (1,1-) Dichloroethylene (cis-1,2-) Dichloroethylene (trans-1,2-) Dichloromethane
Dichlorophenol (2,4-) Dichloropropane (1,2-) Dichloropropene (1,3-)
Dieldrin Diethyl phthalate
1 2 3 4
CASRN Number
506-77-4 94-75-7
1861-32-1 75-99-0
103-23-1 117-81-7 333-41-5 124-48-1 96-12-8 84-74-2
1918-00-9 76-43-6 95-50-1 541-73-1 106-46-7 75-71-8 107-06-2 75-35-4 156-59-2 156-60-5 75-09-2 120-83-2 78-87-5 542-75-6
60-57-1 84-66-2
-
Status Reg.
-
F -
F F
F -
F F - -
F F -
F -
F F F F F -
F -
-
MCLG (mg/L)
-
0.07 -
0.2 0.4
zero -
0.06 zero - -
zero 0.6 -
0.075 -
zero
0.007 0.07 0.1
zero -
zero -
- -
MCL (mg/L)
-
0.07 -
0.2 0.4
0.006 -
0.082
0.0002 - -
0.063 0.6 -
0.075 -
0.005 0.007 0.07 0.1
0.005 -
0.005 -
- -
-
Status HA
Document -
F ‘87 F ‘08 F ‘89
- -
F ‘88 -
F ’87 -
F ‘88 -
F ‘87 F ‘87 F ‘87 F ’89 F ‘87 F ‘87 F ‘90 F ‘87 D ‘93 D ‘94 F ’87 F ‘88
F ‘88
One-day (mg/L)
0.05 1
2 3
20 -
0.02 0.6 0.2 - -
5 9 9
11 40
0.7 2 4
20 10
0.03 -
0.03
0.0005 -
Under review. 1998 Final Rule for Disinfectants and Disinfection By-products: The total for trihalomethanes is 0.08 mg/L. 1998 Final Rule for Disinfectants and Disinfection By-products: The total for five haloacetic acids is 0.06 mg/L. The values for m-dichlorobenzene are based on data for o-dichlorobenzene.
Ten-day (mg/L)
0.05 0.3
2 3
20 -
0.02 0.6
0.05 - -
5 9 9
11 40
0.7 1 1 1 2
0.03 0.09
0.03
0.0005 -
RfD (mg/kg/day) 0.05
0.005 0.01 0.03
0.6 0.02
0.0002 0.02 -
0.1 0.5
0.004 0.09 0.09 0.1 0.2 -
0.05 0.01 0.02 0.06
0.003 -
0.03
0.00005 0.8
2 0.2
0.35 0.9
20 0.7
0.007 0.7 -
4 18
0.1 3 3 4 5 -
2
0.35 0.7 2
0.1 -
1
0.002 30
DWEL (mg/L)
Life-time (mg/L)
- -
0.07 0.2
0.4 -
0.001 0.06 - -
4 -
0.6 0.6
0.075 1 - -
0.07 0.1 -
0.02 -
- - -
10_4 Cancer Risk
mg/L at
- -
- -
3
0.3 -
0.08
0.003 - -
0.07 - - - -
0.04
0.006 - -
0.5 -
0.06 0.04
0.0002 -
Cancer Descriptor
D D
C D
C
B2 E S
B2 D N L D D C D
B2 S
D D
B2 E
B2 L
B2 D
Health Advisories Page 3
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