National Pollutant Discharge Elimination System (NPDES) Stormwater Permitting

National Pollutant Discharge Elimination System (NPDES) stormwater permitting is a federal program that regulates the discharge of pollutants from stormwater runoff into surface waters. The program is administrated by the Environmental Protection Agency (EPA) and implemented by authorized states and tribes. The NPDES program is designed to protect water quality and aquatic life from the harmful effects of stormwater pollution.

Facilities that discharge stormwater runoff, such as construction sites, industrial facilities, and municipalities, are required to obtain an NPDES permit. The permit sets limits on the amount of pollutants that can be discharged, establishes monitoring and reporting requirements, and includes measures to control and treat the pollutants. The permit may also include conditions to protect water quality and sensitive aquatic species.

The NPDES stormwater permitting process begins with the facility submitting an application, including information about the discharge, treatment processes, and monitoring plans. The application is reviewed by the EPA or the authorized state or tribe, and a permit is issued if the facility is in compliance with the regulations. Permits are typically issued for a specific period of time, usually five years, and must be renewed periodically.

The NPDES stormwater permitting process is an important tool for protecting water quality and ensuring that stormwater runoff from industrial and municipal facilities does not cause harm to human health and the environment. It also helps facilities to comply with federal regulations, avoid penalties, and maintain a good reputation. By implementing Best Management Practices (BMPs) and pollution prevention measures, facilities can reduce the amount of pollutants in stormwater runoff and promote a healthier environment.