Check Out the 2024 FALL Newsletter

Check out the Fall Newsletter!  New 2025 Rates, How to Winterize Your Home, District Water Loss Success Story!  Time to VOTE for Participatory Budgeting!

2024 Fall Newsletter

Do You Have a Backflow Device?

KCWD90 has partnered with Backflow Solutions, Inc. (BSI), a third-party contractor, to manage the District's Cross Connection Control Program. BSI provides a web-based tracking program and a more efficient and cost-effective means of managing the District's inventory of backflow prevention assemblies.

What does this mean for you as a backflow customer? Click here to find out.

Here to Serve Our Entire Community

Clean water is essential to the pursuit of health and happiness and King County Water District No. 90 exists to provide these services to everyone in our community. We serve a diverse population and we want to communicate to you, our customers, that we support equality. 

Read Our Full Statement

Welcome to King County Water District #90!

Recent District News

District's Policy on ADUs 6/27/2024
1. INTRODUCTION Accessory Dwelling Units (ADUs) offer a way to include smaller, affordable homes in established neighborhoods. These give homeowners the flexibility to share independent living
Four Creeks Consolidation Study 2/22/2022
The Four Creeks Ranch Water System (FCR) (DOH ID# 22740-4) is a privately owned, Community Group A water system located in unincorporated King County, just south of Issaquah and east of the Renton
Do You Have a Backflow Device? 5/19/2021
KCWD90 has partnered with Backflow Solutions, Inc. (BSI), a third-party contractor, to manage the District's Cross Connection Control Program. BSI provides a web-based tracking program and a more
Resources for Customers Seeking Assistance 12/15/2020
This list of resources is available to customers who may need help with utilities, rent, food, etc. We encourage you to pursue these options if you are struggling and need some help. Bellevue
Here to Serve Our Entire Community 7/9/2020
Clean water is essential to the pursuit of health and happiness and King County Water District No. 90 exists to provide these services to everyone in our community. We serve a diverse population and
King County Water District #90