The Federal Water Pollution Control Act Amendments of 1972 have initiated the world's most massive attack on polluted rivers, lakes and ocean waters. A system of limitations and permits is designed to help America reach two great goals of the 1972 Act-by July 1983, water that is clean enough for swimming, boating, and protection of fish, shellfish and wildlife, and by 1985, no more discharges of pollutants into the Nation's waters. This booklet-through a series of questions and answers-discusses how effluent limitations guidelines and new source performance standards for industry are put together, their complex nature, and the scope of their application to industry.