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delta and Bay, is about 6 million now and will increase 

 more than 3 1/2 times by the year 2020. The 16 million 

 new residents will require tremendous supplies of water — 

 and they will produce even larger quantities of wastes. 



There is as yet no detailed prediction of the expected 

 increase in liquid wastes. The U. S. Public Health 

 Service indicated in 1963 that the volume of effluent 

 discharged into the Bay would increase to perhaps 1,100 

 million gallons per day by 1990 and to more than 1,700 

 million gallons daily by 2015. 



(6) Agricultural Wastes. The Federal Water Pollution 

 Control Administration has completed a study of the effects 

 of the proposed San Joaquin Master Drain on the Bay. The 

 study concluded that the proposed drain, which would carry 

 agricultural wastes from the Central Valley to an outfall 

 near Antioch, would have a significantly harmful effect on 

 the waters of the Bay and delta, adversely affecting 

 fishing, recreation, and esthetic values. 



This harm would come primarily from nutrients the drain 

 would deposit in the Bay; the nutrients would stimulate 

 the growth of large quantities of algae and other aquatic 

 plants. The FWPCA study also concluded, however, that 

 these detrimental effects would be minimized by treatment 



