Hawaii Administrative Rules
Title 11 - DEPARTMENT OF HEALTH
Subtitle 1 - GENERAL DEPARTMENTAL PROVISIONS
Chapter 20 - RULES RELATING TO PUBLIC WATER SYSTEMS
Section 11-20-4 - Maximum contaminant levels for organic chemicals
Current through February, 2024
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).
