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CED-77-108 1 (1977-08-30)

handle is hein.gao/gaobaacoc0001 and id is 1 raw text is: '~ '- -sr-- I z45 ~ A -~ C fl N C Ff -77- /0 F-3o-77 REPORT TO THE CONGRESS U I N llI I liii IIllI II II LM103097 BY THE COMPTROLLER GENERAL OF THE UNITED STATES Unnecessary And Harmful Levels Of Domestic Sewage Chlorination Should Be Stopped Environmental Protection Agency Chlorine is frequently used to disinfect do- mestic sewage, and it is also used in industry and is discharged in various industrial wastes. Chlorinated discharges have been shown to be harmful to the aquatic environment, but they are still largely uncontrolled. In many situa- tions the use of chlorine is not needed. Ex- cept in areas of shellfish-harvesting or of un- restricted irrigation, disinfection of treated wastes usually is not needed to protect --swimmable waters in cold weather months, --waters rarely used for swimming, or --drinking water. When sewage disinfection is needed, present sewage chlorination practices generally result in excessive amounts of chlorine being dis- charged into waterways. More should be done to limit residuals and to promote the efficient use of chlorine in sewage disinfection. /Q 7/ 5~ - AUGUST 30, 1977 CED-77-108 U;

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