Stormwater Quality Management

Placer County is a designated municipal permitee under the U.S. Environmental Protection Agency's National Pollutant Discharge Elimination System (NPDES), which regulates stormwater flows into natural water bodies.

The NPDES regulations require permitted areas to implement specific activities and actions to eliminate or control stormwater pollution.


Under the Phase I NPDES program, Placer County shares a permit with El Dorado County and the City of South Lake Tahoe for the Lake Tahoe watershed area.

Under the Phase II NPDES program Placer County is permitted in the western county area and in the Truckee River Basin. View a map of the phase area (PDF).


The goal of the stormwater quality program is:

  • To reduce pollutants in stormwater runoff
  • Eliminate non-stormwater discharges
  • Lessen the long-term impacts of stormwater discharges from development, business and municipal activities.
  • Educate the public about stormwater impacts


Take our Stormwater Quality Survey.

I'm Looking for Information On