The Clean Water Act of 1972 (amendments to the Water Pollution Control Act of 1948) attempted to substantially reduce discharges of pollutants into bodies of water. The original goal was to have zero discharges by 1985. Water pollution is emitted by both point-source and nonpoint-source emitters. Briefly discuss the approaches used to address the emissions from point-source and nonpoint-source sources. Has the EPA been effective in meeting its water pollution control goals? Does the answer to that question depend on whether you are talking about point-source or nonpoint-source emissions? Explain.