Water Pollution Control Act federal law Federal Water Pollution Control Act Federal Water Pollution Control Act Federal Water Pollution Control Act Water Pollution Control Act Water Pollution Control Act Federal Water Pollution Control Act Water Pollution Control Act Water Pollution Control Act Federal Water Pollution Control Act Water Pollution Control Act http://www.fws.gov/laws/lawsdigest/FWATRPO.HTML Federal Water Pollution Control Act Water Pollution Control Act Water Pollution Control Act Pub.L. 92-500 Federal Water Pollution Control Act