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64444.5. Maximum Contaminant Levels. <br />The maximum contaminant levels for the <br />primary drinking <br />water constituents shown in Table 5 shall not <br />be exceeded in <br />the water supplied to the public. <br />Table 5 <br />�• <br />Maximum Contaminant Levels <br />Organic Chemicals <br />Maximum Contami- <br />Constituent <br />nant <br />Level, mg/l <br />(a) Chlorinated Hydrocarbons <br />Endrin .......................... <br />1 <br />Lindane.. <br />0.0002 r' <br />................... <br />Methoxychlor <br />.0.004 ` <br />................. <br />Toxaphene............ �� <br />0.1 <br />...... <br />(b) Chlorophenoxys .... <br />0.005 <br />2, 4-D .......................... <br />2, 4, 5 -TP Silvex............... <br />0.1 <br />(c) Synthetics <br />0.01 <br />Atrazine <br />........................ <br />Bentazon ........................ <br />0.003 <br />Benzene.. <br />0.018 <br />..... .. ........... <br />Carbon Tetrachloride............ <br />0.001 <br />1,4-Dichl.orobenzene <br />0.0005 <br />............. •.•0.005 <br />1,2-Dichloroethane...... <br />1,1-Dichloroethylene <br />;0.0005 <br />10.006 <br />....... ..... <br />1,3-Dichloropropene..... <br />'I <br />Ethylbenzene <br />0.0005 <br />............... ..... <br />Ethylene Dibromide <br />40.680 <br />.............. <br />Molinate.. <br />��0.00002 <br />.... ........ <br />Monochlorobenzene <br />!I 0.02 <br />............... <br />Simazine........................ <br />0.030 <br />1,1,2,2 -Tetrachloroethane....... <br />0.01 <br />Tetrachloroethylene <br />10.001 <br />............. <br />Thi.obencarb..................... <br />0.005 <br />1,1,1 -Trichloroethane........... <br />0.07 <br />1,1,2 -Trichloroethane........... <br />0,200 - —_ <br />" <br />Trichloroethylene <br />0.032 <br />"- <br />............... <br />Vinyl Chloride ............. <br />0.005 It <br />0.0005 <br />Xylenes <br />......................... <br />1.750* <br />*MCL is for either single isomer or the sum <br />of the isomers. <br />Note: Authority cited: Sections 208 and 4026, Health and <br />Safety Code. <br />Reference: Section 4017, 4024, Health and Safety Code. <br />64445. Initial Sampling. <br />(a) Each water system shall collect a <br />minimum of one <br />sample every three months for one year from <br />each water source <br />at a point prior to any treatment and test for all chemicals <br />listed in Section 64444.5, Table 5. For surface sources, the <br />samples shall be taken at each water intake. <br />For groundwater <br />-17- <br />