40 CFR 141.61 - Maximum contaminant levels for organic contaminants.

§ 141.61 Maximum contaminant levels for organic contaminants.
(a) The following maximum contaminant levels for organic contaminants apply to community and non-transient, non-community water systems.
CAS No. Contaminant MCL (mg/l)
(1) 75-01-4 Vinyl chloride 0.002
(2) 71-43-2 Benzene 0.005
(3) 56-23-5 Carbon tetrachloride 0.005
(4) 107-06-2 1,2-Dichloroethane 0.005
(5) 79-01-6 Trichloroethylene 0.005
(6) 106-46-7 para-Dichlorobenzene 0.075
(7) 75-35-4 1,1-Dichloroethylene 0.007
(8) 71-55-6 1,1,1-Trichloroethane 0.2
(9) 156-59-2 cis-1,2-Dichloroethylene 0.07
(10) 78-87-5 1,2-Dichloropropane 0.005
(11) 100-41-4 Ethylbenzene 0.7
(12) 108-90-7 Monochlorobenzene 0.1
(13) 95-50-1 o-Dichlorobenzene 0.6
(14) 100-42-5 Styrene 0.1
(15) 127-18-4 Tetrachloroethylene 0.005
(16) 108-88-3 Toluene 1
(17) 156-60-5 trans-1,2-Dichloroethylene 0.1
(18) 1330-20-7 Xylenes (total) 10
(19) 75-09-2 Dichloromethane 0.005
(20) 120-82-1 1,2,4-Trichloro- benzene .07
(21) 79-00-5 1,1,2-Trichloro- ethane .005
(b) The Administrator, pursuant to section 1412 of the Act, hereby identifies as indicated in the Table below granular activated carbon (GAC), packed tower aeration (PTA), or oxidation (OX) as the best technology treatment technique, or other means available for achieving compliance with the maximum contaminant level for organic contaminants identified in paragraphs (a) and (c) of this section:
BAT for Organic Contaminants Listed in § 141.61 (a) and (c)
CAS No. Contaminant GAC PTA OX
15972-60-8 Alachlor X
116-06-3 Aldicarb X
1646-88-4 Aldicarb sulfone X
1646-87-3 Aldicarb sulfoxide X
1912-24-9 Atrazine X
71-43-2 Benzene X X
50-32-8 Benzo[a]pyrene X
1563-66-2 Carbofuran X
56-23-5 Carbon tetrachloride X X
57-74-9 Chlordane X
75-99-0 Dalapon X
94-75-7 2,4-D X
103-23-1 Di (2-ethylhexyl) adipate X X
117-81-7 Di (2-ethylhexyl) phthalate X
96-12-8 Dibromochloropropane (DBCP) X X
95-50-1 o-Dichlorobenzene X X
106-46-7 para-Dichlorobenzene X X
107-06-2 1,2-Dichloroethane X X
75-35-4 1,1-Dichloroethylene X X
156-59-2 cis-1,2-Dichloroethylene X X
156-60-5 trans-1,2-Dichloroethylene X X
75-09-2 Dichloromethane X
78-87-5 1,2-Dichloropropane X X
88-85-7 Dinoseb X
85-00-7 Diquat X
145-73-3 Endothall X
72-20-8 Endrin X
100-41-4 Ethylbenzene X X
106-93-4 Ethylene Dibromide (EDB) X X
1071-83-6 Gylphosate X
76-44-8 Heptachlor X
1024-57-3 Heptachlor epoxide X
118-74-1 Hexachlorobenzene X
77-47-3 Hexachlorocyclopentadiene X X
58-89-9 Lindane X
72-43-5 Methoxychlor X
108-90-7 Monochlorobenzene X X
23135-22-0 Oxamyl (Vydate) X
87-86-5 Pentachlorophenol X
1918-02-1 Picloram X
1336-36-3 Polychlorinated biphenyls (PCB) X
122-34-9 Simazine X
100-42-5 Styrene X X
1746-01-6 2,3,7,8-TCDD (Dioxin) X
127-18-4 Tetrachloroethylene X X
108-88-3 Toluene X X
8001-35-2 Toxaphene X
93-72-1 2,4,5-TP (Silvex) X
120-82-1 1,2,4-Trichlorobenzene X X
71-55-6 1,1,1-Trichloroethane X X
79-00-5 1,1,2-Trichloroethane X X
79-01-6 Trichloroethylene X X
75-01-4 Vinyl chloride X
1330-20-7 Xylene X X
(c) The following maximum contaminant levels for synthetic organic contaminants apply to community water systems and non-transient, non-community water systems:
CAS No. Contaminant MCL (mg/l)
(1) 15972-60-8 Alachlor 0.002
(2) 116-06-3 Aldicarb 0.003
(3) 1646-87-3 Aldicarb sulfoxide 0.004
(4) 1646-87-4 Aldicarb sulfone 0.002
(5) 1912-24-9 Atrazine 0.003
(6) 1563-66-2 Carbofuran 0.04
(7) 57-74-9 Chlordane 0.002
(8) 96-12-8 Dibromochloropropane 0.0002
(9) 94-75-7 2,4-D 0.07
(10) 106-93-4 Ethylene dibromide 0.00005
(11) 76-44-8 Heptachlor 0.0004
(12) 1024-57-3 Heptachlor epoxide 0.0002
(13) 58-89-9 Lindane 0.0002
(14) 72-43-5 Methoxychlor 0.04
(15) 1336-36-3 Polychlorinated biphenyls 0.0005
(16) 87-86-5 Pentachlorophenol 0.001
(17) 8001-35-2 Toxaphene 0.003
(18) 93-72-1 2,4,5-TP 0.05
(19) 50-32-8 Benzo[a]pyrene 0.0002
(20) 75-99-0 Dalapon 0.2
(21) 103-23-1 Di(2-ethylhexyl) adipate 0.4
(22) 117-81-7 Di(2-ethylhexyl) phthalate 0.006
(23) 88-85-7 Dinoseb 0.007
(24) 85-00-7 Diquat 0.02
(25) 145-73-3 Endothall 0.1
(26) 72-20-8 Endrin 0.002
(27) 1071-53-6 Glyphosate 0.7
(28) 118-74-1 Hexacholorbenzene 0.001
(29) 77-47-4 Hexachlorocyclopentadiene 0.05
(30) 23135-22-0 Oxamyl (Vydate) 0.2
(31) 1918-02-1 Picloram 0.5
(32) 122-34-9 Simazine 0.004
(33) 1746-01-6 2,3,7,8-TCDD (Dioxin) 3×10−8
[56 FR 3593, Jan. 30, 1991, as amended at 56 FR 30280, July 1, 1991; 57 FR 31846, July 17, 1992; 59 FR 34324, July 1, 1994]

Title 40 published on 2014-07-01

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Title 40 published on 2014-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR 141 after this date.

  • 2014-11-13; vol. 79 # 219 - Thursday, November 13, 2014
    1. 79 FR 67408 - Notice of Public Meeting and Webinar: Preliminary Regulatory Determinations for the Third Contaminant Candidate List
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Notice of public meeting on potential rulemaking.
      The public meeting and webinar will be held on Tuesday, December 9, 2014, from 1 p.m. to 5 p.m., eastern time. Persons wishing to attend the meeting in person or online via webinar must register by December 2, 2014, as described in the SUPPLEMENTARY INFORMATION section.
      40 CFR Part 141