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<br /> TABLE 22 <br /> Comparison of Quality of Combined Sewage for Various Citi es <br /> a005 . Total Total <br /> Type of Wastewater COD D.O. SS Total Col iforms Nitrogen Phosphorus <br /> Location mg/.e ing/.e mg/.e MPN/lOO ml mg/.e as N mg/.e as P <br /> Ave. Range Ave. Range Ave. Ave. Range Ave. Range Ave. Ave. <br /> Typical untreated <br /> municipal 200 100-300 500 250-750 200 100-350 5x107 107 -109 40 10 <br /> Typical treated <br /> municipal: <br /> Primary effluent 135 70-200 330 165-500 80 40-120 2x107 5x106-5x108 35 7.5 <br /> Secondary effluent 25 15-45 45 25-80 15 10-30 103 102-104 30 5.0 <br /> Storm sewer discharges: <br />"" Atlanta, GA, 1969 100 48-540 8.5 10 2,.2 <br />'" <br /> Berkeley, CA, 1968 60 18-300 200 20-600 100 40-150 <br /> Brooklyn, N.Y., 1972 180 86-428 1051 132-8759 1.2 <br /> Bucyrus, OH, 1968 120 11-560 400 13-920 470 20-2440 107 2xlOs-5x107 13 3.3 <br /> Cincinnati, OH, 1970 200 80-380 250 190-410 1100 500-1800 <br /> Des Moines, lA, 1968 115 29-158 295 155-1166 12.7 11.6 <br /> Detroit, MI, 1965 153 74-685 115 274 120-804 16.3 4.9 <br /> Kenosha, WI, 1970 129 464 458 2xI06 10.4 5.9 <br /> Milwaukee, WI, 1969 55 26-182 127 118-765 244 133-848 2x10s-3x107 3.24 0.8 <br /> Northampton, U.K., 1960 150 80-350 400 200-800 10 <br /> Racine, WI, 1971 119 439 <br /> Roanoke, WI, 1969 115 78 7x107 <br /> Sacramento, CA, 1968 165 70-328 230 50-513 125 56-502 5x106 7x10s-9x107 <br /> San Francisco, CA, 1969 49 1.5-202 133 17-626 68 4-426 3x 106 2x104-2x107 <br /> Washington, D.C., 1965 71 10-470 382 80-1760 622 35-2000 3x106 4xlOs-6x106 3.6 1.0 <br />