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Providing Backflow Testing Services to the following Communities

Aloha | Banks | Beaver Creek | Beaverton | Canby | Clackamas | Cornelius | Donald | Durham | Fairview
Forest Grove | Gervais | Gladstone | Gresham | Happy Valley | Hillsboro | Johnson City | Keizer | King City

Lake Oswego | Maywood Park | Milwaukie | Newberg | North Plains | Oregon City | Portland | Redmond
Rivergrove | Salem | Sandy | Sherwood | Sublimity | Tigard | Troutdale | Tualatin | Vancouver | West Linn
Wilsonville | Woodburn | Wood Village

Cascadia Backflow is dedicated to the inspection, repair and servicing of all types of commercial and residential backflow prevention devices. Your backflow prevention device needs to operate properly to eliminate the backflow and contamination of potable (drinking) water.


When you choose Cascadia Backflow, an experienced professional will perform your backflow testing service. Backflow testing is a very specialized field that requires additional training and licensing.  When working with Cascadia Backflow you are working with a company that is knowledgeable and employs certified technicians.


We take great pride in the quality of our work!  We also do our best to offer all of our services at very reasonable and competitive prices. We are locally owned and operated in Portland, Oregon. Rest assured that we take our responsibility to keep your drinking water safe very seriously.

Ask us about annual backflow assembly testing program

Contact Us Today to Schedule your Backflow Testing

503.980.4806  |

MICHAEL STIMPSON    General Manager

Michael started backflow testing over 15 years ago. With a background in landscape management and construction he obtained his backflow certification to further his skills in the landscape industry.


Not long after obtaining his backflow certification he left the landscape industry to pursue full time backflow testing and repair work. Over the course of several years Michael has learned to service and repair every device currently on the market.


Along with his Backflow Certification Michael holds various other technical certifications. 

Current Certifications

  • Oregon Backflow Tester Certification #4695

  • Washington State Backflow Tester Certification #B6015

  • Oregon Landscape Construction Professional #15514

  • Certified Landscape Technician

  • Confined Space Safety Certification

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MATTHEW STIMPSON    Certified Backflow Tech

Matthew has a background in irrigation installation and maintenance. Starting as an irrigation technician Matthew has continued to progress and learn to improve his skills.


Matthew has taken several courses to improve his knowledge with backflow prevention devices and the proper way to service and repair each device on the market. Matthew is currently licensed in Oregon and Washington as a Certified Backflow Tester. 

Current Certifications

  • Oregon Backflow Tester Certification #5891

  • Washington State Backflow Tester Certification #B6016

  • Confined Space Safety Certification

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TABATHA STIMPSON    Backflow Coordinator

Tabatha has been in the Customer Service industry for over 15 years, which includes administrative and management roles for a couple businesses in Oregon.

She now provides superior customer service for Cascadia Backflow, including job coordination, scheduling and customer follow-up and support.

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Family Owned and Operated in Portland Oregon

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