King County’s WaterWorks Grant Program has $4.6 million in funding available for community-driven projects that protect water quality, control pollution, and build healthy communities. Projects must provide an improvement to water quality within the Wastewater Treatment Division service area, and non-profits, Tribes, cities, schools, and special purpose districts are eligible to apply.
Applications are open now and due September 30, 2025. The application process begins by filling out a short Letter of Intent form through the online grant portal. Selected applicants will be invited to submit full proposals in February 2026.
The WaterWorks grant team is hosting free public information sessions, on September 3 (online), September 8 (in-person at King Street Center in Seattle), and September 11 (online), for potential applicants. Advance registration is required, reserve your spot today.
For more information about WaterWorks grants, visit www.kingcounty.gov/waterworks-grants, or email [email protected].