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About Us
Backflow Testing for over 20 years...
Certified Backflow Testing has been testing irrigation and fire control backflow assemblies for more than 2 decades. Started in 2003 by Loren Hanson, Certified Backflow Testing has deep experience in backflow testing for residential and commercial applications. Exactly 20 years later, in 2023, CBT was acquired by STOP Inc, expanding our service area, capabilities and customer base. In addition to King County, we also offer backflow testing in Snohomish County and Pierce County.
Expertise & Professionalism
We take great pride in the expertise and professionalism of our backflow test technicians. Each member of our team is certified by the State of Washington, ensuring that your backflow testing needs are handled with the highest level of skill and knowledge. Our technicians undergo rigorous training and stay up-to-date with the latest industry standards. With their specialized certifications and annual testing kit calibrations you can trust that our technicians possess the necessary qualifications to perform accurate and reliable backflow testing services. Your safety and the protection of your water supply are in capable hands with our certified backflow test technicians at Certified Backflow Testing.
Repairs & Replacements
We go beyond just backflow testing, because not every assembly passes the annual inspection. Our comprehensive services also cover expert backflow assembly repair and replacement, ensuring the uninterrupted flow of clean and safe water. Our skilled technicians are equipped to diagnose and address any issues with precision and efficiency. Whether it's a minor repair or a complete replacement, we use high-quality parts and adhere to industry best practices to restore your backflow prevention system's functionality. Your safety and the integrity of your water supply are our top priorities. Trust Certified Backflow Testing and STOP, Inc. for reliable and professional backflow assembly testing, repair and replacement solutions.
Meet our BATs: Backflow Assembly Testers
Mark Hanson, B5734
Clifton Brown, B6543
Clifton Brown, B6543
Mark has been with CBT since 2011. When not doing backflow testing in Sammamish and the surrounding areas, he spends time trail running, marathon running and dirt bike riding. He resides in the Sammamish area with his family.
Clifton Brown, B6543
Clifton Brown, B6543
Clifton Brown, B6543
Clifton is the manager of the backflow team and a journeyman plumber. He has 18 years of commercial and residential plumbing experience, with 11 of those years with STOP Inc. Clifton resides in Marysville with his new wife, 3 kids and their toy poodle.
Loren Hanson, B4103
Clifton Brown, B6543
Loren Hanson, B4103
Loren is the original owner of CBT, starting it in 2003. After selling CBT to STOP Inc in 2023 he continues to perform backflow tests. Loren is an avid competitive bicyclist, and resides in the Sammamish area with his family.
