About Us

Office Hours 

Monday – Friday 8:00 am to 5:00 pm



Michael Stimpson

General Manager

Michael started backflow testing over 10 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




Matthew Stimpson

Certified Backflow Technician

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. 

  • Oregon Backflow Tester Certification #5891
  • Washington State Backflow Assembly Tester #B6016 
  • Confined Space Safety Certification



Tabatha Stimpson

Backflow Coordinator



Cascadia Backflow is fully Licensed, Bonded, and Insured.
Locally owned and operated.
Oregon LCB# 9230