Error message

Image resize threshold of 10 remote images has been reached. Please use fewer remote images.

National Pollutant Discharge Elimination System

National Pollutant Discharge Elimination System

The National Pollutant Discharge Elimination System (NPDES) page of the United States Environmental Protection Agency (EPA) website provides basic information about the NPDES, including general definitions pertaining to pollutants and bodies of water in the U.S. as well as why and how to obtain an NPDES permit.