National Pollution Discharge Elimination System

The National Pollutant Discharge Elimination System (NPDES) is a program in the United States that controls water pollution by regulating point sources that discharge pollutants into waterways. Established under the Clean Water Act, it requires facilities, such as factories and sewage treatment plants, to obtain permits that limit the types and amounts of pollutants they can release. This system aims to protect water quality and safeguard public health and the environment by ensuring that harmful substances are properly managed and monitored before they enter lakes, rivers, and streams.