[Code of Federal Regulations] [Title 40, Volume 19] [Revised as of July 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR141.61] [Page 426-428] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 141--NATIONAL PRIMARY DRINKING WATER REGULATIONS--Table of Contents Subpart G--National Revised Primary Drinking Water Regulations: Maximum Contaminant Levels and Maximum Residual Disinfectant Levels Sec. 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- 0.07 Dichloroethylene. (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- 0.1 Dichloroethylene. (18) 1330-20-7............... Xylenes (total)...... 10 (19) 75-09-2................. Dichloromethane...... 0.005 (20) 120-82-1................ 1,2,4-Trichloro- .07 benzene. (21) 79-00-5................. 1,1,2-Trichloro- .005 ethane. ------------------------------------------------------------------------ [[Page 427]] (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 Sec. 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: [[Page 428]] ------------------------------------------------------------------------ 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 0.0005 biphenyls. (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) 0.4 adipate. (22) 117-81-7................. Di(2-ethylhexyl) 0.006 phthalate. (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.................. Hexachlorocyclopentad 0.05 iene. (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) 3x10-8 ------------------------------------------------------------------------ [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]