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Page 10 <br />consumer confidence and satisfaction. The information in the following two tables can be found in 22 CCR §64449 (California <br />SMCLs) and 40 CFR §143.3 (U.S. EPA SMCLs). The values in this table are in units of micrograms per liter (µg/L) unless <br />otherwise stated. <br />Chemical <br />California U.S. EPA <br />SMCL SMCL <br />Effective Date SMCL SMCL <br />Effective Date <br />Aluminum 200 1994-09-08 50 to 200 1992-07-30 <br />Color 15 Units 1977 15 Units 1981-01-19 <br />Copper 1,000 1977 1,00012 <br />1,00012 <br />1992-07-30 <br />1981-01-19 <br />Corrosivity --Removed Non-corrosive 1981-01-19 <br />Fluoride See 22 CCR §64433.2 1998-04-22 2,000 1986-05-02 <br />Foaming Agents (MBAS)500 1977 500 1981-01-19 <br />Iron 300 1977 300 1981-01-19 <br />Manganese 50 1977 50 1981-01-19 <br />Methyl-tert-butyl ether (MTBE)5 1999-01-07 ---- <br />Odor -Threshold 3 Units 1977 3 Units 1981-01-19 <br />pH ----6.5 to 8.5 1981-01-19 <br />Silver 100 --100 1992-07-30 <br />Thiobencarb 1 1989-04-05 ---- <br />Turbidity 5 Units 1977 ---- <br />Zinc 5,000 1977 5,000 1981-01-19 <br />Recommended Upper Short Term <br />Total Dissolved Solids (mg/L) or <br />Specific Conductance (µS/cm9) <br />500 1,000 1,500 --500 1981-01-19 <br />900 1,600 2,200 ------ <br />Chloride (mg/L)250 500 600 --250 1981-01-19 <br />Sulfate (mg/L)250 500 600 --250 1981-01-19 <br />12 The updated SMCL for copper increased the number of significant figures from 1 to 2. <br />9.B. - Page 26 of 27 <br />215