Residential customers may be required to have a backflow assembly installed under the following conditions:

 

  • You have an irrigation system connected to your plumbing

  • You have a fire sprinkler system connected to your plumbing.

  • You have a seperate irrigation meter

  • You have an approved or unapproved auxiliary water supply

 

 

If you are planning on installing a fire sprinkler system or an irrigation system

 

  1. Install the backflow assembly according to our specifications. We strongly advice you to hire a professional for the installation of the device.

  2. Test:  Contact a third party Backflow Assembly Tester to conduct the test. Once completed, the tester shall submit a copy of the report to the District.

  3. Inspection:  Once the assembly is installed, contact the District and schedule a time for on of our CCC Specialist to inspect the assembly.

  4. Annual testing:  Upon completion of steps 1-3, the backflow assembly must be tested annually thereafter. The District will nofify you by mail when it is time for your annual test.

 

Questions contact us

Residential Customers

8:00 Am to 4:30 Pm

Phone: (206) 243-3990

Fax:     (206) 244-7514

Email: Kcwd20@Kcwd20.com

© 2015 King County Water District 20.