Backflow Tester List

State rules

Colorado

Colorado’s Water Quality Control Division at the Department of Public Health and Environment publishes the backflow prevention and cross-connection control page for public water systems. The page says Regulation 11, section 11.39, is the backflow rule and notes an effective date of October 15, 2023, for an update. On March 28, 2025, the Governor signed House Bill 25-1077 on backflow prevention device requirements. The division says that law allows certified cross-connection control technicians to inspect, test, and repair backflow prevention devices, and it encourages suppliers to use those technicians in their programs. The page does not name ASSE, ABPA, or AWWA as the certifying body.

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 Colorado Department of Public Health and Environment, Water Quality Control Division, implements Regulation 11.39.
Who may test an assembly
The division says House Bill 25-1077 allows certified cross-connection control technicians to inspect, test, and repair devices, and Policy 7 expects suppliers to ensure testing is done by such a technician.
Official program page
Official page →

Regulation 11 is the Colorado drinking water regulation that contains the backflow rule. The division’s page points suppliers to section 11.39 and to Policy 7, which explains how the rule is implemented. Policy 7 says the department reviews whether a supplier’s process is adequate to ensure backflow prevention assemblies are tested by a Certified Cross-Connection Control Technician. The policy says a supplier is typically in compliance with the cited process requirement when it follows the steps the policy describes. That is a water-supplier duty. It is not a homeowner instruction manual for performing the test.

The division’s rulemaking page says cross connections remain the largest culprit in waterborne disease outbreaks in the United States, in the division’s words, and it identifies a contact for Regulation 11 questions. The public program page also posts customer information, survey templates, a written-program template, and an annual-report template. Those documents are for suppliers building a program. A property owner who receives a test notice should follow the water supplier’s instructions, because the rule places the program on the supplier and the 2025 law speaks to certified technicians rather than to a single state fee schedule.

House Bill 25-1077, as described on the division page, allows certified cross-connection control technicians to inspect, test, and repair devices. The division encourages suppliers to use those technicians so devices protect public health. The page does not publish a state roster link in the text retrieved for this research, and it does not state a state application fee. Before hiring, ask the supplier what “certified cross-connection control technician” means in its approved program and ask to see the credential the supplier accepts.

Official resources in Colorado

CDPHE backflow prevention and cross-connection control

Division page on Regulation 11.39, Policy 7, and House Bill 25-1077.

Policy 7 backflow rule policy

Division policy describing how suppliers show that testing is done by a Certified Cross-Connection Control Technician.

BPCCC rulemaking contact page

Division page that gives a Regulation 11 contact and describes the 2023 rule update.

Key facts for Colorado

What to do next

  1. Ask the water supplier which credential it treats as a Certified Cross-Connection Control Technician.
  2. Read the notice from the supplier before assuming a state roster exists; this research did not find a roster on the division page.
  3. Keep irrigation, fire, and domestic assemblies separate in your questions, because the supplier’s survey decides the hazard.
  4. Use Policy 7 as a supplier document, not as permission to test your own assembly.

Looking for your city or county in Colorado?

We haven't found official program-level pages for Colorado 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 Colorado, 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.
    CDPHE backflow prevention and cross-connection control
    Website →
    Phone not shown: use the contact page on the official website above.
    Your city or county office: Local governments →
    Not sure who handles it locally? USAGov's free help line, 1-844-872-4681, or the Colorado 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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