Kent · King County
Commercial backflow testing in Kent — warehouses, manufacturing & more
The Kent Valley is one of the largest warehouse and manufacturing districts on the West Coast. That means fire lines, process water and premises isolation on thousands of commercial buildings, all of which need annual tests on file with the City.
City of Kent program
How Kent’s backflow program works
The short version, summarized from the utility’s own cross-connection control materials.
Source: City of Kent Public Works (and others) · verified October 2026 ↗Under Kent City Code 7.02, property and business owners must install and maintain backflow assemblies where needed and have them tested annually by a state-certified tester.
High-hazard connections need premises isolation at the meter — an air gap or RPBA.
Kent’s high-hazard list includes food and beverage processing, chemical plants, car washes, labs, medical and dental clinics, and more.
Fire sprinkler systems, boilers and lawn irrigation are among the low-hazard connections that still need protection.
Report submission
We complete Kent’s backflow test report form and submit it to the City for you.
Questions for the utility: PublicWorks@KentWA.gov · (253) 856-5500
On the ground
What we see in Kent
Every city’s housing stock and commercial mix shapes what’s in the meter box.
Warehouse & distribution
Big-box warehouses run large fire-line DCDAs, plus domestic and irrigation assemblies. We test multi-building campuses on one schedule and one invoice.
Food & beverage manufacturing
Food processors and beverage bottlers are high-hazard sites that need RP premises isolation and equipment protection throughout the plant.
Neighborhoods
Serving all of Kent
Parts of Kent are served by Highline Water District, Soos Creek Water & Sewer District or other providers. Check your bill.
- Downtown Kent
- Kent Valley
- East Hill
- West Hill
- Panther Lake
- Meridian
- Scenic Hill
- Lake Meridian
FAQ
Kent backflow questions
01 Who can test my backflow assembly in Kent?
02 How do backflow test reports get submitted to City of Kent?
03 How much does backflow testing cost in Kent?
04 What if my assembly fails in Kent?
Field test report · next due
Kent test due? We’ll handle it.
Book online in two minutes. We test, repair if needed, and file the report with your water utility — and remind you next year.