Coastal Cleanup Day is an annual waterway and land cleanup held in  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 local partners.

Sign up for reminder emails about Coastal Cleanup Day 2025.

Coastal Cleanup 2025 – Information & Registration Coming Soon!

• Volunteers – check back late July for cleanup site and registration information
• Interested in becoming a Site Captain? If you are interested in hosting your own cleanup location, please contact Connie Tran at (650) 388-2096 or ctran1@smcgov.org. 

Thank You Statewide and Local Partners!

• Bair Island Aquatic Center
• BayLands FrontRunners
• California Coastal Commission
• California Department of Boating & Waterways
• California State Parks
• California State Parks Foundation
• City of Belmont
• City of Brisbane
• City of Burlingame
• City of Millbrae
• City of Redwood City
• City of San Bruno
• City of San Mateo
• City of South San Francisco
• Coastside Land Trust
• Crystal Geyser
• Familias al Aire Libre
• Gilead
• Golden Gate Regional Center
• Grassroots Ecology
• Half Moon Bay Rotary Club 
• Marina Lagoon Action Commitee
• Ocean Conservancy
• Oracle
• Oyster Point Dragons
• Pacific Beach Coalition
• Puente de la Costa Sur
• Redwood High School
• San Francisco Opera
• San Gregorio Environmental Resource Center
• San Mateo County Harbor District
• San Mateo County Office of Sustainability 
• San Mateo County Parks
• Sea Hugger
• Sequoia Yacht Club
• Surfrider Foundation
• The Club at Westpoint