Certified Backflow Testing

Company Overview

Since 2003, Certified Backflow Testing has been the preferred choice for countless homeowners, businesses, and municipalities each year. We conduct backflow assembly tests throughout the Puget Sound area, so that this yearly obligation becomes so simple, you might forget about your backflow assembly altogether! Offering straightforward scheduling, quick responses, and transparent pricing, we email you a copy of your report for your records, and we file your backflow report with the necessary water purveyor without any added charge. Best of all, our automated system reaches out to you each year to remind you of the service—just confirm your property ownership, and we manage everything else! Loren Hansen was the founding owner of Certified Backflow Testing (CBT), running his two-person backflow testing business from his home. After two decades of consistent growth, Loren sold CBT to a major commercial plumbing firm, Seattle Tacoma Olympia Plumbing STOP Inc, in 2023. Today, CBT stands as one of the largest backflow testing companies in Washington State, servicing thousands of assemblies each year while also handling hundreds of repairs and installations annually.