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 portions of the 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.
With your help, we can keep our waterways clean!


Click on the icons below to learn more about how you can help prevent pollution from entering our streets and storm drains

WPP sends out e-mail bulletins about community participation events
and helpful reminders on protecting water quality. Find recent
bulletins below and click on the stormwater subscription topic
below to sign up and get them delivered straight to your inbox!
Publication Date | Bulletin Topic |
March 7, 2025 | Clearing the Way for Cleaner Waterways |
February 28, 2025 | Act Now: Rain Is On the Way! |
February 27, 2025 | Don’t Miss These Stormwater Pollution Prevention Events in March! |
February 12, 2025 | Prepare for Rainy Season: Business Storm Preparedness Tips |
February 12, 2025 | All About the County's Green Infrastructure Program |
February 7, 2025 | Pet Waste Pollution Prevention /National Love Your Pet Day |
For past WPP e-mail list serve bulletin publications, please visit the List Serve Bulletin Archive page.