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Drinking Water Maximum Contaminant Levels • http://w}yw.dhs.ca.gov/ps/ddweMchenticals/mcVmclindex.htm <br />TABLE 1. CALIFORNIA DRINKING WATER <br />PRIMARY MAXIMUM CONTAMWANT LEVELS <br />[All values in milligrams per liter (mg/L), unless otherwise noted.] <br />Contaminant Primary MCL <br />22 CCR §64431, Table 64431-A-Inorganic Chemicals <br />Alununum 1 <br />Antimony 0.006 <br />Arsenic 0.05 <br />Asbestos <br />Barium y M~a <br />1 <br />Beryllium 0.004 <br />Cadmium 0.005 <br />Chromium 0.05 <br />Cyanide 0.2 <br />Fluoride 2.0 <br />Mercury 0.002 <br />Nickel 0.1 <br />Nitrate (as NO3) 45 <br />Nitrate + Nitrite (sum as nitrogen) 10 <br />Ni[ri[e (as nitrogen) 1 <br />Selenium 0.05 <br />Thallium 0.002 <br /> <br />22 CCR §64433.2, Table 64433.2-A, Optimal Fluoride Levels <br />See also the Fluoride MCL, 22 CCR §64431, Table 64431-A <br />2 of 13 7/21 /99 3:32 PM <br />