Backflow Tester List

State rules

Wyoming

EPA’s 2025 report to Congress says Wyoming has not assumed Safe Drinking Water Act primacy and that EPA Region 8’s office oversees public-water-system implementation there. Wyoming’s own Water Quality Rules, Chapter 12, still set design and construction standards for public water supplies, including backflow devices. The Environmental Quality Council’s 2023 adoption package for Chapter 12 says backflow prevention devices at water service connections are inspected and certified by a certified backflow assembly tester at installation. That tester’s certification is by the American Society of Sanitary Engineers or the American Backflow Prevention Association. High-hazard nonresidential devices are inspected and tested annually by a certified backflow assembly tester. A defective device is repaired or replaced immediately, or the service may be terminated.

Checked against official sources on October 11, 2026. Rules and links change; confirm with the office listed before you act.

Try a ZIP like 30303, “Travis County” or “Columbus, OH”
Drinking-water agency
The Wyoming Department of Environmental Quality Water Quality Division rules in Chapter 12 address backflow assembly testers. EPA directly implements Safe Drinking Water Act primacy.
Who may test an assembly
A certified backflow assembly tester whose certification is from ASSE or ABPA, as Chapter 12 states.
Official program page
Official page →

The adopted Chapter 12 text says residential connections are low-hazard back-siphonage connections unless a hazard classification finds otherwise. Many ordinary nonresidential buildings are low-hazard back-pressure connections unless classified otherwise. An auxiliary source is a high-hazard back-pressure cross-connection and gets a reduced-pressure principle device. Restaurants, laboratories, laundries, irrigation, and hazardous-substance sites are high hazard unless a classification says otherwise. The supplier decides and may require a survey.

A hazard classification surveyor is a person certified by the USC Foundation as a cross-connection control specialist, by ASSE as a cross-connection control surveyor, by another state program the Administrator approves, or a distribution operator who is also a certified backflow device tester employed by the supplier. Device certifications named in the text are ASSE, IAPMO, and the USC Foundation. Those are product certifications. The tester certifications named for the installation inspection are ASSE or ABPA. High-hazard backflow incidents are reported to the Department of Environmental Quality, Water Quality Division, within seven days.

A customer should ask for an ASSE or ABPA tester certification as the Chapter 12 text describes, and should tell the supplier about any auxiliary source or irrigation system because those facts change the hazard. EPA’s direct-implementation role does not erase Chapter 12. No test fee is stated in the rule text used here. The Department’s Water Quality Division is the state office named for the seven-day incident report.

Official resources in Wyoming

Chapter 12 adoption package

Environmental Quality Council adoption of Water Quality Rules Chapter 12, including tester certification by ASSE or ABPA and annual high-hazard tests.

EPA report to Congress

Says EPA directly implements the public-water-system program in Wyoming.

EPA primacy page

Explains primacy and direct implementation. It does not issue a tester license.

Key facts for Wyoming

What to do next

  1. Ask for ASSE or ABPA tester certification as Chapter 12 describes it.
  2. Tell the supplier if the property has a well, another water source, or chemical irrigation.
  3. If a test fails, ask about immediate repair or replacement before the service is terminated.
  4. Remember EPA implements the federal drinking-water program, while Chapter 12 still states the device and tester rules.

Looking for your city or county in Wyoming?

We haven't found official program-level pages for Wyoming we can verify yet, so we don't show local numbers here rather than guess. Here's what to use instead, in order:

  1. General Start with the statewide information above. It applies across Wyoming, but cities and counties can add their own steps, fees or deadlines.
  2. Call to confirm Ask the official office. They have the current local rule, fee and form.
    Wyoming DEQ Chapter 12 public water supply standards
    Website →
    Phone not shown: use the contact page on the official website above.
    Not sure who handles it locally? USAGov's free help line, 1-844-872-4681, or the Wyoming page on USA.gov can point you to the right office.
  3. Know the current info? Tell us and include a link to the official page. We check every tip before it goes up.

Helpful guides

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