Skip to main content

KingCounty.gov is an official government website.

Official government websites use .gov
Website addresses ending in .gov belong to official government organizations in the United States.
Secure .gov websites use HTTPS
A lock or https:// means you've safely connected to the .gov website. Only share sensitive information on official, secure websites.
King County Washington home

WaterWorks Grant Program

The WaterWorks Grant Program provides approximately $6 million in funding every two years to organizations carrying out a variety of water quality improvement projects in the service area for King County's regional wastewater system.

  A collage of photos at various sites.
Source: Top left: UW Green Futures Lab, Top right: Futurewise, Bottom left: Cascadia College, Bottom right: Puget Soundkeeper

Nonprofits, schools and educational institutions, agencies, community groups, tribes, and special purpose districts are all eligible to apply—and partnerships are encouraged.

Create an account, or log in to manage existing grants.

Online Grant Portal

Application process

There are two different tracks for applying for grants: the competitive track and the council-allocated track. Both tracks have the same eligibility criteria, and similar applications, but the review and selection process are different. Proposals for the council-allocated track are selected by King County Council.* WaterWorks staff administer all grants after they are awarded, and all grants have the same reporting requirements.

*Contact your councilmember’s office directly for questions about the WaterWorks council-allocation review or selection process. For a map of council districts and contact info, visit the council district finder.

How to apply: 

  1. Determine your eligibility

    Find out if you’re eligible to apply for a WaterWorks Grant and learn the “who, what, and where” of our program.   

  2. Prepare your proposal

    Prepare for writing your proposal by watching the recording of our information session. Then, review examples of WaterWorks funded projects and learn about our proposal evaluation process, our funding policies, and regional water quality responsibilities. Find helpful resources—including tips for writing grants—on the resources for applicants page.

  3. Submit proposal online

    All application materials, including the Letter of Intent, must be submitted online through the grant portal.

    Create an account or login to the portal here.

  4. Check your email for funding decisions

    Key dates for each grant cycle, including when awards will be announced, can be found on the grant timeline page.

Translation and interpretation services are available upon request, email water.grants@kingcounty.gov or call 206-477-4297.

Read our blog: Clean water stories

A man with a beard wearing a white collared shirt and ball cap, points to piping and valves that make up a groundwater cleaning system.

Recent stories

Read more stories.