<P> The Clean Water Act ( CWA ) is the primary federal law in the United States governing water pollution . Its objective is to restore and maintain the chemical , physical , and biological integrity of the nation 's waters by preventing point and nonpoint pollution sources , providing assistance to publicly owned treatment works for the improvement of wastewater treatment , and maintaining the integrity of wetlands . It is one of the United States ' first and most influential modern environmental laws . As with many other major U.S. federal environmental statutes , it is administered by the U.S. Environmental Protection Agency ( EPA ) , in coordination with state governments . Its implementing regulations are codified at 40 C.F.R. Subchapters D , N , and O ( Parts 100 - 140 , 401 - 471 , and 501 - 503 ) . </P>
<P> The Clean Water Act ( CWA ) is the primary federal law in the United States governing water pollution . Its objective is to restore and maintain the chemical , physical , and biological integrity of the nation 's waters by preventing point and nonpoint pollution sources , providing assistance to publicly owned treatment works for the improvement of wastewater treatment , and maintaining the integrity of wetlands . It is one of the United States ' first and most influential modern environmental laws . As with many other major U.S. federal environmental statutes , it is administered by the U.S. Environmental Protection Agency ( EPA ) , in coordination with state governments . Its implementing regulations are codified at 40 C.F.R. Subchapters D , N , and O ( Parts 100 - 140 , 401 - 471 , and 501 - 503 ) . </P>
who is responsible for enforcing water quality standards
who is responsible for enforcing water quality standards
U.S. Environmental Protection Agency
U.S. Environmental Protection Agency