Haw. Code R. § 11-20-4 - Maximum contaminant levels for organic chemicals

The following are the MCLs for organic chemicals.

(a) (Reserved)

(b) (Reserved)

(c) (Reserved)

(d) The following MCLs for organic contaminants apply to community and non-transient, non-community water systems.

Contaminant	MCL (mg/ L)	CAS. No.
(1) Benzene	0.005	71-43-2
(2) Carbon tetrachloride	0.005	56-23-5
(3) o-Dichlorobenzene	0.6	95-50-1
(4) para-Dichlorobenzene	0.075	106-46-7
(5) 1,2-Dichloroethane	0.005	107-06-2
(6) 1,1-Dichloroethylene	0.007	75-35-4
(7) cis-1,2-Dichloroethylene	0.07	156-59-2
(8) trans-1,2-Dichloroethylene	0.1	156-60-5
(9) 1,2-Dichloropropane (DCP)	0.005	78-87-5
(10) Ethylbenzene	0.7	100-41-4
(11) Monochlorobenzene	0.1	108-90-7
(12) Styrene	0.1	100-42-5
(13) Tetrachloroethylene	0.005	127-18-4
(14) Toluene	1	108-88-3
(15) 1,1,1-Trichloroethane	0.2	71-55-6
(16) Trichloroethylene	0.005	79-01-6
(17) 1,2,3-Trichloropropane(TCP)	0.0006	96-18-4
(18) Vinyl chloride	0.002	75-01-4
(19) Xylenes (total)	10	1330-20-7
(20) Dichloromethane	0.005	75-09-2
(21) 1,2,4-Trichlorobenzene	0.07	120-82-1
(22) 1,1,2-Trichloroethane	0.005	79-00-5

(e) The following MCLs for synthetic organic contaminants apply to community and non-transient, non-community water systems.

Contaminant	MCL(mg/l)	CAS No.
(1) Alachlor	0.002	15972-60-8
(2) Aldicarb	0.003	116-06-3
(3) Aldicarb sulfoxide	0.004	1646-87-3
(4) Aldicarb sulfone	0.002	1646-87-4
(5) Atrazine	0.003	912-24-9
(6) Carbofuran	0.04	1563-66-2
(7)Chlordane	0.002	57-74-9
(8) Dibromochloropropane(DBCP)	0.00004	96-12-8
(9) 2,4-D	0.07	94-75-7
(10) Ethylene dibromide(EDB)	0.00004	106-93-4
(11) Heptachlor	0.0004	76-44-8
(12) Heptachlor epoxide	0.0002	1024-57-3
(13) Lindane	0.0002	58-89-9
(14) Methoxychlor	0.04	72-43-5
(15) Polychlorinated biphenyls (PCB)	0.0005	1336-36-3
(16) Pentachlorophenol	0.001	87-86-5
(17) Toxaphene	0.003	8001-35-2
(18) 2,4,5-TP (Silvex)	0.05	93-72-1
(19) Benzo[a]pyrene	0.0002	50-32-8
(20) Dalapon	0.2	75-99-0
(21) Di(2-ethylhexyl) adipate	0.4	103-23-1
(22) Di(2-ethylhexyl) phthalate	0.006	117-81-7
(23) Dinoseb	0.007	88-85-7
(24) Diquat	0.02	85-00-7
(25) Endothall	0.1	145-73-3
(26) Endrin	0.002	72-20-8
(27) Glyphosate	0.7	1071-53-6
(28) Hexachlorobenzene	0.001	118-74-1
(29) Hexachlorocyclopentadiene	0.05	77-47-4
(30) Oxamyl (Vydate)	0.2	3135-22-0
(31) Picloram	0.5	1918-02-1
(32) Simazine	0.004	122-34-9
(33) 2,3,7,8-TCDD (Dioxin)	3 x 10-8	1746-01-6

(f) The best available technologies (BATs), treatment techniques, or other means available for achieving compliance with the organic contaminant MCLs are identified as either granular activated carbon (GAC), packed tower aeration (PTA), or oxidation (OX) in 40 C.F.R. § 141.61(b).

Notes

Haw. Code R. § 11-20-4

[Eff 12/26/81; am and comp 3/7/92; am and comp 1/2/93; am and comp 12/15/94; am and comp 10/13/97; am and comp 9/7/99; am and comp 11/30/02; am and comp 12/16/05; am and comp 11/28/11; comp MAY 02 2014 ] (Auth: HRS §§ 340E-2, 340E-9) (Imp: HRS §§ 340E-2, 340E-9; 42 U.S.C. §§ 300g-1, 300g-2; 40 C.F.R. Parts 141, 142, § 142.10, § 141.12, § 141.61) Am and Comp 12/28/2017 Am and comp 10/29/2020