Napa Countywide Stormwater Pollution Prevention Program (NCSPPP)

The NCSPPP is a joint effort of the County of Napa, cities of American Canyon, Napa, St. Helena and Calistoga, and the Town of Yountville to: Foam Pollution

  • Prevent stormwater pollution
  • Protect and enhance water quality in creeks and wetlands
  • Preserve beneficial uses of local waterways
  • Comply with State and federal regulations

Though the entities of the NCSPPP carry out their own individual stormwater pollution prevention programs, the NCSPPP provides for the coordination and consistency of approaches between the individual participants and documents their efforts in annual reports.

How the NCSPPP is Funded

The NCSPPP is funded by the member agencies and is administered by the Napa County Flood Control and Water Conservation District’s Stormwater Program Manager.


The purpose of this website is to provide solutions for residents and businesses to help control water pollution. We hope this information helps you join our effort to eliminate stormwater pollution in Napa County.

Read the 2022 Napa River Watershed Stormwater Resource Plan and provide public comments to the draft. Please send your comments to [email protected]

Learning Opportunities

Drain PipeWhat is Stormwater?

The California Waterboard has created a series of fun videos to explain what stormwater is and what can you do to help.

Bay-Friendly Landscaping and GardeningHerbicides and Pesticides are just some of the many pollutants that end up in our waterways. Check out this great video on Organic Gardening in Napa County and learn how to keep these pollutants out of our creeks, rivers and the Bay. And for more tips on keeping your home and garden pest-free a less toxic way, check out Our Water Our World.