Swan Island Dahlia Farm at Dahlia Festival

Certified Testers List

Certified Testers List

(Updated February 2021)

Companies are listed in Alphabetical order. Canby Utility does not prefer one testing company over another.

For a complete list of Certified Backflow Testers in Clackamas County please go to the Oregon Public Health Drinking Water Data page.

  • A1 Backflow — 503-873-9600 — Silverton, Oregon
  • AFP Systems — 503-692-9284 — Tualatin, Oregon
  • A & A Drilling — 503-780-3823 — Milwaukie, Oregon
  • American Backflow Services — 503-289-1745 — 5905 N. Interstate Portland, OR 97217
  • Ben’s Backflow, LLC — 503-351-0266 — Eagle Creek, Oregon
  • Bruton Backflow & Irrigation — 503-618-1806 — PO Box 1927 Fairview OR 97024
  • Cascadia Backflow — 503-899-7248 — 16869 SW 65th Ave #9 Lake Oswego OR 97035
  • Custom Plumbing & Construction — 503-266-1212 — PO Box 1051 Canby OR 97013
  • Clean Water Backflow Testing — 503-708-2518 — 15755 SW Willow Ct. Sherwood OR 97140
  • Columbia Cross Connection Control — 503-235-6141 — PO Box 9217 Portland OR 97207
  • Dynamic Backflow — 971-983-9456 — PO Box 610 Wilsonville OR 97070
  • Eco Backflow LLC — 503-669-2722 — PO Box 579 Sandy, Oregon 97055
  • Fire Services Plus — 503-848-2345 — Beaverton, Oregon
  • Full Landscape Management — 503-406-8233 — Canby, Oregon
  • Heath Backflow — 503-625-8553 — PO Box 1565 Sherwood OR 97140
  • Living Color Nursery- Nathan Holmes — 971-275-4306 — PO Box 514 Wilsonville OR 97070
  • Mark Anderson Backflow Testing — 503-849-4700 — Oregon City, Oregon 97045
  • M & E Backflow Consulting — 503-347-1107 — 1517 NE 10th Place Canby OR 97013
  • Merrill Water Systems — 503-734-7400 — 14603 S. Macksburg Rd., Molalla OR 97038
  • My Plumbing — 971-409-3864 — 17416 SE Brooklyn St Portland OR 97236
  • Northwest Backflow Inspection — 503-695-3286 — PO Box 1536 Hillsboro OR 97123
  • Northwest Plumbing & Backflow — 503-488-0773 — 12042 SE Sunnyside Rd. Clackamas OR 97015
  • Oregon Backflow Testing — 503-491-9402 — 15685 SW 116th Ave. #199 Portland OR 97224
  • Oregon Irrigation — 503-656-9826 — 25333 S. Zeller Dr. Canby OR 97013
  • Pro-Grass — 503-682-6076 — 29895 SW Kingsman Rd. Wilsonville OR 97070
  • Tom Hempel Testing, LLC — 503-390-1961 — PO Box 20271 Keizer OR 97307
  • T & R Building Service — 503-318-6313 — 8660 Rogue Ln. Wilsonville OR 97070
  • Waterscape Irrigation — 503-209-9748 — PO Box 1856 Gresham OR 97030
  • Willamette Valley Backflow — 503-884-7696 — PO Box 1605 Silverton OR 97381