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<br /> <br />i <br />I <br />I, <br />1'1' <br />~ ; i <br /> <br />o <br />(.'-) <br />\~ J <br />to <br />-J <br />00 <br /> <br />The .;iistribution of total capital investment costs for water <br />quality a~d pollution control during the period from 1965 to 2020 <br />is shown in Figure 1. Of the total estimated ,cost of $262 million, <br />about 75 percent, or $196 million, will be needed for the con- <br />structionof conventional wastewater treatment facilities. Another <br />$38 million will be invested in tertiary wastewater treatment <br />facilities. The ,investment for conventional treatment of industrial <br />wastewater is estimated to be considerably less -- approximately <br />$16 million, The remaining $112 million of capital investment is <br />estimated to treat recreation wastes, abate pollution from animal <br />waste, control salinity, and reduce trace elements in domestic <br />water supplies. <br /> <br />.. vi - <br /> <br /> <br />!, <br />