Definitions for "National Pollution Discharge Elimination System"
Keywords:  epa, discharges, tpdes, cwa, npdes
(NPDES) - The federal program for regulating direct and indirect wastewater discharges to the environment under Sections 307, 318, 402, and 405 of the Federal Clean Water Act (CWA).
In the Clean Water Act, this is the national permitting process for point-source discharges of pollutants into waters of the United States.
Permit system that requires EPA approval for water discharges.