Skip to main content Skip to site navigation

Coastal Cleanup Day

General information

Coastal Cleanup Day is an annual waterway and land cleanup held in the month of September. It’s California’s largest volunteer event and brings community awareness to protecting our marine environment from litter. 

San Mateo County Environmental Health Services coordinates the event in partnership with the California Coastal Commission, the Ocean Conservancy, and many Statewide and local partners.

Sign up for reminder emails about Coastal Cleanup Day 2022.

Coastal Cleanup 2021 Results

  • 2,700 volunteers participated in the event.
  • 22,000 lbs of trash and recyclables were picked up.
  • Event photos

Thank you to everyone who came out and participated in Coastal Cleanup 2021 to help protect our bay and ocean from litter pollution. The State is a much cleaner and healthier place today because of all your work.

If you did not get a chance to participate in Coastal Cleanup 2021, you can use the Clean Swell app at any time to track litter you pick up in your community. The app can be downloaded in the Apple Store or Google Play. The litter your household collects will help contribute to the total amount of litter picked up in San Mateo County. Check out global and local data at

Meet up with a local organization below to pick up litter in San Mateo County year-round.

Daly City

Top of the Hill Improvement Association | Intermittent

Redwood City

Pride and Beautification Committee | Earth Week – April

San Mateo

City of San Mateo TeamUp to CleanUp | Intermittent

San Mateo County Coast

Pacific Beach Coalition | Saturdays every month
Rotary Club of Half Moon Bay | Second Sunday of every month
SeaHugger | Saturdays every month
Surfrider | One Saturday every month

Thank You Statewide and Local Partners!