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Certified Backflow Assembly Testing · Washington

Tacoma Water — Backflow Testing Requirements Tacoma and parts of Pierce and south King County

If you received a backflow testing notice from Tacoma Water, this page explains how their program works and how to schedule a certified tester.

Schedule Backflow Test

The short version

  • Testing cycle: Annual. Every backflow assembly on your property must be tested by a Washington State certified Backflow Assembly Tester (BAT).
  • Who sends the report: Under Tacoma Water's program, your tester sends the completed report to the utility.
  • Deadline: Within 15 days of test completion.
  • What happens if you miss it: Under TMC 12.10.220, non-compliance can result in a $100 penalty per occurrence, installation of a backflow prevention assembly at the customer's expense, and/or termination of water service.

How reports are submitted to Tacoma Water

Test reports may be submitted by mail, fax, or email. Tacoma Water requires reports within 15 days of test completion. Testers must also submit current BAT certification and equipment calibration certificates once per year.

Contact for questions

  • Phone: 253-502-8207
  • Email: backflow@cityoftacoma.org
  • Mailing address: Tacoma Water, PO Box 11007, Tacoma WA 98411-0007, Attn: Water Quality

Full program details on Tacoma Water's site: Tacoma Water — Backflow Program ↗

How to book a certified tester through Northwest Clear

Northwest Clear connects you with Washington-certified Backflow Assembly Testers (BATs). Book online in a few minutes and we send your job to certified testers who serve your area.

Schedule Backflow Test

Cities served by Tacoma Water

Properties in these cities may be under Tacoma Water's compliance program — but confirm against your specific notice, since some cities are split across multiple purveyors.

Notes

Fax submissions: 253-502-8721. Test reports must be completed in ink and cover everything on the Tacoma Water test report form. Incomplete reports will not be accepted. Through Tacoma Water's Authorized Tester Program, you can have the annual test-due notice sent straight to the tester you choose.

About this page

This is an unofficial guide compiled from public sources. Regulatory basis: Tacoma Municipal Code 12.10.220; WAC 246-290-490. Always confirm details against your official notice from Tacoma Water.

Sources: source 1 · source 2 · source 3 · source 4