Backflow Testing in Oregon City | Protect Your Drinking Water From Contamination

Backflow testing in Oregon City is the annual inspection of a backflow prevention device to confirm it is keeping non-potable water from flowing backward into the clean water supply. The test uses a calibrated differential pressure gauge kit to check that the internal check valves and relief valve are opening and closing within their rated specifications. We perform backflow testing across Clackamas, Multnomah, and Washington counties as part of our pumps and filtration services from our Oregon City plumbing team.

When you need backflow testing

Oregon requires annual testing of all backflow prevention assemblies. If you receive a notice from the South Fork Water Board, Clackamas River Water, or your local water provider that your backflow test is due, it needs to be tested by a certified tester within the deadline to avoid fines or water shutoff. If you have a new irrigation system, fire suppression system, or commercial connection that required a backflow device at installation, the device needs its first test and then annual tests every year after. If your backflow device is leaking, discharging water from the relief port, or your water has an unusual taste or color, the device may be failing and needs testing.

Properties in Oregon City served by the South Fork Water Board and those in surrounding Clackamas County served by other water districts all have the same annual testing requirement.

Our backflow testing process

We locate the backflow assembly, which is typically installed near the water meter, on an irrigation line, or at a commercial connection point. We connect a calibrated test gauge kit to the test ports on the device. We run the test sequence: checking the first check valve, the second check valve, and the relief valve (on reduced pressure zone assemblies) to verify each component opens and closes within specification.

If the device passes, we fill out the test report and file it with the local water authority on your behalf. If the device fails, we identify which component failed, explain the repair, and can usually fix it during the same visit by replacing internal springs, seals, or check valve components. We retest after repair to confirm it passes.

Backflow testing cost in Oregon City

A standard annual backflow test on a residential or small commercial device is a flat fee. If the device fails and needs repair, the parts and labor for the repair are additional. Larger assemblies on commercial properties or systems with multiple backflow devices cost more due to the number of tests required. We give you the test fee upfront. Call (503) 919-7243 to schedule your annual test.

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