CWA
CWA means the Clean Water Act (formerly referred to as the Federal Water Pollution Control Act or Federal Water Pollution Control Act Amendments of 1972), Pub. L. 92500, as amended by Pub. L. 95217, Pub. L. 95576, Pub. L. 96483, Pub. L. 97117, and Pub. L. 1004, 33 U.S.C. 1251 et seq.