Watershed Protection Program

The County of San Diego Watershed Protection Program (WPP) helps to ensure that our waterways are protected by preventing pollutants from entering the County’s storm drain system in compliance with our municipal Stormwater permit.

WPP conducts outreach, inspection and complaint investigations for commercial, industrial, and residential properties in the unincorporated County to reduce pollutants from entering streets and storm drains. WPP is also responsible for developing and conducting monitoring programs, assessing scientific data, providing assistance to other County departments, as well as developing training to stakeholders on stormwater regulations.

FAQ's & Resources
Learn about ways to implement water quality best management practices in and around residential areas
Learn about ways to implement water quality best management practices at industrial and commercial facilities
Educational Stormwater Resources
Learn how to maintain your structural BMP
Learn more about Development resources available such as the current County BMP Design Manual and more

Report Stormwater Pollution or Irrigation Runoff:


or e-mail us at watersheds@sdcounty.ca.gov


To report potholes, road sweeping request, or a clogged storm drain:

1-877-684-8000 or 1-858-694-3850

or submit your Road Service Request online. 

If problem is after hours, on a weekend, or during a holiday, please call the County After-Hours Answering Service at 1-800-901-7755 


Additional Resources  

RV Users Resources Page - Learn more about how you can protect our waterways by maintaining your RV properly.  

2019 Best Management Practice Design Manual - The new 2019 manual has been posted!

Rain Barrel Information - Learn more about rain barrels and how to purchase one 

San Diego Sustainable Landscape Design Classes

Water Quality Improvement Plans submitted to the Regional Water Quality Control Board September 29, 2015

Jurisdictional Runoff Management Program and Illegal Discharge Procedures submitted to the Regional Water Quality Control Board June 26, 2015

County of San Diego Watershed Protection Ordinance effective February 26, 2016.

Project Clean Water


Watershed Protection Program - E-mail List Serve Bulletins - 2019

For past WPP e-mail list serve bulletin publications, please visit the List Serve Bulletin Archive page.