(a) MCLGs are zero for the following contaminants:
(1) Benzene
(2) Vinyl chloride
(3) Carbon tetrachloride
(4) 1,2-dichloroethane
(5) Trichloroethylene
(6) Acrylamide
(7) Alachlor
(8) Chlordane
(9) Dibromochloropropane
(10) 1,2-Dichloropropane
(11) Epichlorohydrin
(12) Ethylene dibromide
(13) Heptachlor
(14) Heptachlor epoxide
(15) Pentachlorophenol
(16) Polychlorinated biphenyls (PCBs)
(17) Tetrachloroethylene
(18) Toxaphene
(19) Benzo[a]pyrene
(20) Dichloromethane (methylene chloride)
(21) Di(2-ethylhexyl)phthalate
(22) Hexachlorobenzene
(23) 2,3,7,8-TCDD (Dioxin)
(b) MCLGs for the following contaminants are as indicated:
| Contaminant |
MCLG in mg/l |
| (1) 1,1-Dichloroethylene |
0.007 |
| (2) 1,1,1-Trichloroethane |
0.20 |
| (3) para-Dichlorobenzene |
0.075 |
| (4) Aldicarb |
0.001 |
| (5) Aldicarb sulfoxide |
0.001 |
| (6) Aldicarb sulfone |
0.001 |
| (7) Atrazine |
0.003 |
| (8) Carbofuran |
0.04 |
| (9) o-Dichlorobenzene |
0.6 |
| (10) cis-1,2-Dichloroethylene |
0.07 |
| (11) trans-1,2-Dichloroethylene |
0.1 |
| (12) 2,4-D |
0.07 |
| (13) Ethylbenzene |
0.7 |
| (14) Lindane |
0.0002 |
| (15) Methoxychlor |
0.04 |
| (16) Monochlorobenzene |
0.1 |
| (17) Styrene |
0.1 |
| (18) Toluene |
1 |
| (19) 2,4,5-TP |
0.05 |
| (20) Xylenes (total) |
10 |
| (21) Dalapon |
0.2 |
| (22) Di(2-ethylhexyl)adipate |
.4 |
| (23) Dinoseb |
.007 |
| (24) Diquat |
.02 |
| (25) Endothall |
.1 |
| (26) Endrin |
.002 |
| (27) Glyphosate |
.7 |
| (28) Hexachlorocyclopentadiene |
.05 |
| (29) Oxamyl (Vydate) |
.2 |
| (30) Picloram |
.5 |
| (31) Simazine |
.004 |
| (32) 1,2,4-Trichlorobenzene |
.07 |
| (33) 1,1,2-Trichloroethane |
.003 |
[50 FR 46901, Nov. 13, 1985, as amended at 52 FR 20674, June 2, 1987; 52 FR 25716, July 8, 1987; 56 FR 3592, Jan. 30, 1991; 56 FR 30280, July 1, 1991; 57 FR 31846, July 17, 1992]