§141.50 Maximum contaminant level goals for organic contaminants.

(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:

 
------------------------------------------------------------------------
                                                                MCLG in
                         Contaminant                              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]