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<br /> .. <br />.: " '\ <br />~~'?> ~ .' TABLE 1II-2 . <br /> DISSOLVED FRACTION. IMPOUNDMENT DATA <br /> Recommended <br /> Year criteria for raw <br />Parameter 1974-1975 1975-1976 . water for <br /> mean maximum.!/ mean maximum.!!' municipal use <br /> (EPA. 1976 ) <br />Tem.pera ture (OC) 14.8 23 13.9 23 <br />Oxygen, Diss. (mg/l) 8.5 S.lY 8.7 6.11.1 <br />Turbidity (J.T.U.) 9 16 10 19 <br />pH 8.2 9.0 8.1 8.5 5-9 <br />Specific conductance <br />(umhos/cm@25O) 487 680 449 630 <br />Alkalinity (mg/l as <br />CaC03) 114 155 112 164 <br />Hardness, total (mg/1 <br />as CaC03) 226 560 230 464 <br />Chloride (mg/l) 9.8 15 9.1 13 250 <br />Sulfate (mg/1 ) 173 550 118 200 250 <br />Calcium. (mg/1) 153 295 163 351 - f./ . <br />Sodium (mg/1) 29.0 78 21. 7 30.9 ~ <br />Potassium (mg/l) 3.4 6.2 2.9 3.6 <br />Copper (ug/l) 4.5 13 3.6 20 I 1000 <br />Lead (ug/1) 1.3 22 0.0 11- 50 <br />Zinc (ug/l) 10.6 252 7.0 17 5000 <br />Manganese (ug/l)' 24 268 11 49 50 <br />Iron (ug/1) 5 50 7 53 300 <br />Arsenic (ug/l) 0.8 8 0.1 1 50 <br />Mercury (ug/l) 0.02 0.11 0.03 0.07 2 <br />Silver (ug/1) 0.2 8'::..1 0.0 12.1 50 <br />Nickel (ug/1) 2 6 1 8 <br />Cobalt (ug/l) 1 16 .0.4 6 <br />Cadmium (ug/1) 3 14 1 5 10 <br />Lithium (ug/1) 19 89 13 22 <br /> <br />1/ Unless otherwise indicated. <br />21 Minimum. values. <br />31 None detected in 35 of 42 samples. <br />41 None detected in 44 of 46 samples. <br />sl None detected in 41 of 42 samples. <br />61 Sodium. concentrations less than 20 mg/l are recommended for very <br />restrictive diets. <br /> <br />Source: Herrmann and Mahan (1976). <br /> <br />. <br /> <br />III-14 <br /> <br />l <br />