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90 METROPOLITAN WATER DISTRICT I '1 , I l~.., ~. U,c,;...l water will be filtered and chlorinated as a precautionary measure, and will be clear and of excellent quality as it lem'es the plant. This water, with a hardness of about 85 parts per million, is compared with the present water of the District cities in the follow- ing tabulation. With the exception of Beverly Hills no member city filters or softens its present water supply. While the qualiiy of the water in anyone city is never absoluteiy uniform, the data given are believed representative of average city-wide conditions. CllY AVERAGE TOTAL HARDNESS, ro....RTS PER MILLION 273 132 \9\ 232 304 \97 40 112 279 . IRo ')6 217 428 149 150 85 Anaheim nun... Beverly Hills (so{telled <.loLl tillt'red) Burbank m.... Com pIon no Fullerton ..m.. Glendale ..... Long Bench. ........... Los .i\ngeles (aqueduct supply) ......... Los Angeles (Los Angeles River gJ.lIeril;'s.1 Pasild~na n............n......................................... .. San Marino Santa Ana ___... Santa Monica . Torrance ..___m_m..... Approximate weighted <Iverage Colorudo Ri.....P.f (softeneJ nnd fihcr~d) . The design of the softening and fiitration plant conforms to well- established practice except that the units, in some respects, establish new precedents for size. The most modern improvements have been incorporated and the plant is designed for flexibility so that future deveiopments may be utilized if desirable. The plant will have an initial capacity of 100 million gallons per day with provision for eniargement to 400 million gallons per day when required. The featnres which cannot be readily duplicated or eniarged, such as the influent and effluent conduits, head house, administration build- ing, and main channels, are built on a 400-m.g.d. capacity basis III in the initial development. The remainder of the plant, consisting i of the mixing and settling basins, fiiters, and zeolite softeners, is I being built to the 100-m.g.d. capacity only. The preparation of plans and specifications for the softening plant was begun in November 1938. The first equipment contract was awarded March 10, 1939 and bids were received on the generai contract for construction of the plant on October 27, 1939. The general contract was awarded to the Griffith Company, of Los 1