California Code of Regulations › Title 22 - Social Security › Division 4 - Environmental Health › Chapter 15 - Domestic Water Quality and Monitoring Regulations › Article 5.5 - Primary Standards-Organic Chemicals › Section 64444 - Maximum Contaminant Levels-Organic Chemicals

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
The MCLs for the primary drinking water chemicals shown in
					 table 64444-A shall not be exceeded in the water supplied to the public.
Table 64444-A
Maximum Contaminant Levels Organic
					 Chemicals
Chemical
Maximum Contaminant Level,
							 mg/L
(a) Volatile Organic Chemicals (VOCs)
Benzene......................................
0.001
Carbon
							 Tetrachloride......................................
0.0005
1,2-Dichlorobenzene......................................
0.6
1,4-Dichlorobenzene......................................
0.005
1,1-Dichloroethane......................................
0.005
1,2-Dichloroethane......................................
0.0005
1,1-Dichloroethylene......................................
0.006
cis-1,2-Dichloroethylene......................................
0.006
trans-1,2-Dichloroethylene......................................
0.01
Dichloromethane......................................
0.005
1,2-Dichloropropane......................................
0.005
1,3-Dichloropropene......................................
0.0005
Ethylbenzene......................................
0.3
Methyl-
tert
-butyl
							 ether......................................
0.013
Monochlorobenzene......................................
0.07
Styrene......................................
0.1
1,1,2,2-Tetrachloroethane......................................
0.001
Tetrachloroethylene......................................
0.005
Toluene......................................
0.15
1,2,4-Trichlorobenzene......................................
0.005
1,1,1-Trichloroethane......................................
0.200
1,1,2-Trichloroethane......................................
0.005
Trichloroethylene......................................
0.005
Trichlorofluoromethane......................................
0.15
1,1,2-Trichloro-1,2,2-Trifluoroethane......................................
1.2
Vinyl
							 Chloride......................................
0.0005
Xylenes......................................
1.750*
(b) Synthetic Organic Chemicals
							 (SOCs)
Alachlor......................................
0.002
Atrazine......................................
0.001
Bentazon......................................
0.018
Benzo(a)pyrene......................................
0.0002
Carbofuran......................................
0.018
Chlordane......................................
0.0001
2,4-D......................................
0.07
Dalapon......................................
0.2
Dibromochloropropane......................................
0.0002
Di(2-ethylhexyl)adipate......................................
0.4
Di(2-ethylhexyl)phthalate......................................
0.004
Dinoseb......................................
0.007
Diquat......................................
0.02
Endothall......................................
0.1
Endrin......................................
0.002
Ethylene
							 Dibromide......................................
0.00005
Glyphosate......................................
0.7
Heptachlor......................................
0.00001
Heptachlor
							 Epoxide......................................
0.00001
Hexachlorobenzene......................................
0.001
Hexachlorocyclopentadiene......................................
0.05
Lindane......................................
0.0002
Methoxychlor......................................
0.03
Molinate......................................
0.02
Oxamyl......................................
0.05
Pentachlorophenol......................................
0.001
Picloram......................................
0.5
Polychlorinated
							 Biphenyls......................................
0.0005
Simazine......................................
0.004
Thiobencarb......................................
0.07
Toxaphene......................................
0.003
1,2,3-Trichloropropane......................................
0.000005
2,3,7,8-TCDD
							 (Dioxin)......................................
3x10-8
2,4,5-TP (Silvex)......................................
0.05
1. Repealer
					 of section and renumbering and amendment of section
					 64445.5 to section
					 64441 filed 9-8-94 as an
					 emergency; operative 9-8-94 (Register 94, No. 36). A Certificate of Compliance
					 must be transmitted to OAL by 1-6-95 or emergency language will be repealed by
					 operation of law on the following day. For prior history, see Register 90, No.
					 13.
2. Repealer of section and renumbering and amendment of section
					 64445.5 to section
					 64444 refiled 1-3-95 as an
					 emergency; operative 1-3-95 (Register 95, No. 1). A Certificate of Compliance
					 must be transmitted to OAL by 5-3-95 or emergency language will be repealed by
					 operation of law on the following day.
3. Repealer of section and
					 renumbering and amendment of former section
					 64444.5 to section
					 64444 refiled 4-26-95 as an
					 emergency; operative 4-26-95 (Register 95, No. 17). A Certificate of Compliance
					 must be transmitted to OAL by 8-24-95 or emergency language will be repealed by
					 operation of law on the following day.
4. Certificate of Compliance
					 as to 4-26-95 order including amendment of Table 64444-A transmitted to OAL
					 5-5-95 and filed 6-19-95 (Register 95, No. 25).
5. Editorial
					 correction of Ethylene Dibromide entry (Register 95, No. 38).
6.
					 Amendment of subsection (a) of Table and amendment of NOTE filed 4-17-2000;
					 operative 5-17-2000 (Register 2000, No. 16).
7. Amendment of Table
					 64444-A filed 5-13-2003; operative 6-12-2003 (Register 2003, No.
					 20).
8. Amendment of first paragraph, table and NOTE filed
					 12-14-2017; operative 12-14-2017 pursuant to Government Code section
					 11343.4(b)(3)
					 (Register 2017, No. 50).
Note: Authority cited: Sections
						116271,
						116350
						and
						116365,
						Health and Safety Code. Reference: Sections
						116365,
						116385
						and
						116555,
						Health and Safety Code.