Backflow Testing

Safe, reliable drinking water is TVWD's number one priority. In addition to consistently delivering water that meets or is better than all federal and state drinking water standards, TVWD is also responsible for protecting the public water system from pollutants and contaminants.

Our Cross Connection Control program seeks to eliminate or protect all cross connections in the public water system and help our customers comply with backflow regulations and reduce the risk of backflow hazards.

The State and TVWD require backflow protection on private plumbing systems exposed to non-potable water sources such as, but not limited to, irrigation systems, fire suppression systems, boilers, and wells.

A cross connection is any connection between piping that carries drinking water (also known as potable water) and the piping or fixtures that carry other types of water or substances that are not safe to drink or may impact the taste or odor of water (also known as non-potable water). Common cross connections include hot tubs, sprinkler and irrigation systems and auxiliary water systems (wells).

Drinking water flows from the source to your tap in pressurized water pipes. Normally it flows in one direction, though under certain circumstances it can flow in the opposite direction, or "backflow." When backflow occurs, water runs backwards through the water system and could contain something that might contaminate the drinking water supply. TVWD strives to maintain positive pressure in the system at all times, but events such as main breaks and fire fighting can contribute to backflow conditions.

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Annual Backflow Testing Requirements

Per Oregon Administrative Rule (OAR) 333-061-070 and District Rules and Regulations, all approved backflow prevention assemblies must be maintained and tested at least once per calendar year to protect the public water system.

Gold Plan Subscription for Residential Customers

For your convenience, TVWD offers a subscription based program to meet State and TVWD annual backflow assembly testing requirements. Qualifying residential customers may choose to have TVWD coordinate their annual backflow assembly test.

Find A Certified Backflow Assembly Tester

As a public entity, TVWD does not make recommendations for State certified backflow assembly testing companies. Visit this page for helpful tips on finding a certified backflow testing company.

Unapproved Backflow Assemblies

More and more, backflow assemblies that don’t meet state regulations are being sold online. These may cost less up front, but they aren’t certified to protect your drinking water - and they won’t pass your required annual inspection.

Commercial Customer - Backflow Testing Resources

TVWD staff recognize the challenges commercial customers face coordinating annual backflow assembly tests. We welcome the opportunity to partner with the individuals who oversee the annual backflow testing.

For Certified Testers

Information Certified Backflow Testers need to submit tests to TVWD.

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Quick Link to Gold Plan Subscription Application

Backflow Testing

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