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200 million population predicted for 1975, approximately three-fourths will be served by public water supplies. This growth in population, along with increased consumption per capita, will increase the daily water demand upon public water systems from 17 billion gallons at present to an estimated 30 billion gallons in 1975. Ninety per cent is ultimately nonconsumptive use, and the water is available for re-use-usually, as you know, somewhat the worse for wear. Recently the Department of Commerce estimated that an investment in water plant of almost one billion dollars a year over the next two decades would be required to eliminate present deficiencies, to offset obsolescence, and to adequately serve the rapidly growing population. Self-supplied industrial demand for water has grown even faster than has domestic water use. At present 60 billion gallons a day are used in industrial processes. Not only is industry expanding, but new industrial processes, such as synthetic fibers, synthetic rubber, and petrochemicals, require increasing quantities of water. It has been estimated that by 1975 industrial water requirements will have doubled, even after due allowance is made for more general re-cycling of process waters. Again, about 90 per cent of this water will be available
American Journal of Public Health – American Public Health Association
Published: Apr 1, 1957
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