http://www.law.cornell.edu/wex/clean_water_act_cwa http://www.law.cornell.edu/wex/clean_water_act_cwa http://www.law.cornell.edu/wex/clean_water_act_cwa http://www.law.cornell.edu/wex/clean_water_act_cwa Clean Water Act Clean Water Act Clean Water Act of 1972 Clean Water Act