King County Water District #90
15606 SE 128th Street
Renton, WA 98059
425-255-9600  Office
425-277-4128  Fax
King County Water District #90

Get Acrobat Reader


Special Notice
May 23, 2018
June 9, 2018, Getting Plants Off To A Great Start: Proper Planting, Watering, and More!
Read the complete story
May 10, 2018
Backflow Information for our Customers
Read the complete story
May 10, 2018
Annual Customer Survey on Water Conservation
Read the complete story
Apr 25, 2018
May 24, 2018, Savvy Gardener Class: Container Gardening Do's & Don'ts
Read the complete story
Apr 12, 2018
Proposed Lakeside Industries Asphalt Plant-Reagan Dunn
Read the complete story
Mar 3, 2018
2018 Savvy Gardener Class Schedule
Read the complete story
Feb 7, 2018
2018 Schedule of Charges
Read the complete story
Oct 17, 2017
Eight Benefits of WA State Sewer & Water Districts
Read the complete story
Apr 27, 2017
King County Ordinance 2016-0521
Read the complete story

We're glad you're here and hope this website will provide you with useful information about King County Water District #90 -- your local water service provider.

Mission Statement:The mission of KCWD90 is to provide safe and reliable drinking water to District customers at a reasonable rate.

What We Are -- Who We Serve

Our Three CommissionersKing County Water District #90 (KCWD90) is a Special Purpose District located in the Renton Highlands area of unincorporated King County. The District’s Water Service Area is presently bounded on the west by the City of Renton. Coal Creek Utility District (CCUD) is adjacent to the northwesterly corner of the District’s Water Service Area. To the south, the Cedar River is the boundary between the District and Cedar River Water & Sewer District (CRWSD). Other adjacent water purveyors include the City of Issaquah to the northeast and Mirrormont to the east of the District. The District shares no boundaries with either of these purveyors.

How We Operate
The District is a municipal corporation as set forth in the Revised Code of Washington (RCW) Title 57 and authorized by King County ordinances. The District is subject to Federal, State and Local regulations. Three local citizens are elected to KCWD90’s Board of Commissioners by voters living within the District's Boundaries. The Board of Commissioners establishes District water rates, sets policies, and oversees operations. The Board meets regularly on the first and third Tuesday of each month at 4:30 p.m. All meetings are open to the public. Day-to-day District administrative and operational duties are carried out by a thirteen-member staff, along with consulting engineers and counsel.

LIKE US ON FACEBOOK. Facebook is a great way for our customers to be notified of special updates, emergency outages, boil notices or other Water District related info. Simply click on the box to the left to be taken to KCWD90's Facebook page.

Featured Articles:
King County Ordinance 2016-0521

Please click to open the form

Proposed Lakeside Industries Asphalt Plant-Reagan Dunn
Frequently Asked Questions:
Why do I have to have a backflow device?

A backflow device is required in order to prevent contaminated water from entering the drinking water system.

Examples of customers requiring backflow devices are premises with:

1. Fire sprinklers or private hydrants

2. Mobile home parks and shopping malls

3. Fish and/or decorative ponds

4. Hot tubs and swimming pools (unless there is an air gap)

5. Irrigation systems

6. Service locations with dialysis machines, x-ray equipment or dental equipment;

7. Fire protection systems

• View All F.A.Q.'s

top of page