Backflow Prevention in Commerce City, CO

Keep Your Drinking Water Flowing in One Direction

Colorado requires backflow prevention assemblies to be tested annually by a certified tester, because a pressure drop in the main can pull water backward through any unprotected cross-connection. Irrigation systems, boilers, and hose connections are the usual culprits. JAC's Plumbing installs, tests, repairs, and replaces backflow assemblies throughout Commerce City, CO along with Northglenn, Thornton, and Denver for residential and light commercial properties alike. Colorado winters also add freeze damage to the list of common failures.


Compliance is only part of the reason to take this seriously. The assemblies exist so that fertilizer, boiler chemicals, and stagnant irrigation water never reach a kitchen tap, and a device that has not been tested is simply a device nobody has verified. We handle the testing paperwork your water provider expects and bring 23 years of plumbing experience to the installation itself. Testing is quick. Get in touch through our contact page to schedule testing or service.

Free Estimate!

For the fastest reply, text us at

Contact Us

Backflow Prevention We Provide

  • Annual Backflow Testing

    Certified testing confirms the assembly still closes under reverse pressure, which is the only thing that matters. We run the required test procedure, complete the report, and submit it to your water provider. You receive a copy for your records.

  • Backflow Assembly Installation

    New irrigation systems, boilers, and commercial connections all require protection sized to the hazard level. We select the correct assembly type, install it at an accessible height with proper clearances, and test it before putting the system into service.

  • Assembly Repair and Rebuild

    Failed checks, worn relief valve seats, and fouled springs are all repairable with manufacturer rebuild kits. Replacing the internals costs considerably less than replacing the assembly. We retest immediately afterward to confirm the device passes cleanly. Documentation follows the same day.

  • Freeze Damage Repair

    Assemblies left charged through a Colorado winter crack predictably. We repair or replace the damaged components, then show you the proper winterization sequence so the same failure does not repeat next season. Prevention here is straightforward. The sequence takes ten minutes.

  • Cross-Connection Survey

    Hose bibs without vacuum breakers, unprotected boiler fills, and improvised irrigation connections create hazards owners rarely know about. We walk the property, identify them, and recommend the appropriate protection for each. Most corrections are inexpensive and quick. You get a written summary.

  • Compliance Documentation Support

    Water providers track testing deadlines and send notices that are easy to misplace. We keep your test dates on file, remind you before the deadline, and submit the reports directly. Compliance stops being something you have to manage.

Why Choose Us for Backflow Prevention

Certified Testing Done Properly

A backflow test is a specific procedure with specific gauges, not a visual inspection. Ours is performed to the required standard and documented accordingly, which is what your water provider and your own liability protection actually depend on.

Paperwork Handled for You

Missed submission deadlines generate notices and sometimes fees, even when the device passed. We file the reports on your behalf and track the annual cycle. The only thing you need to do is let us in. Deadlines stop being your responsibility.

Repairs Instead of Automatic Replacement

Many failed assemblies need a rebuild kit rather than a new device. We carry the common ones and repair on the spot where possible. That approach saves owners a substantial amount over the life of the equipment. Rebuilt assemblies test as reliably.

Protection You Can Actually Trust

The purpose of the assembly is keeping contaminated water out of your drinking supply, and a device nobody has verified provides no assurance at all. Testing turns an assumption into a confirmed fact you can rely on. Certainty is the whole point.

Winterization Guidance Included

Freeze damage is the most common reason assemblies fail here, and it is entirely preventable. We show you the shutoff and drain sequence for your specific setup. Ten minutes each fall avoids a spring repair bill. We walk you through it once.

Scheduling That Fits Irrigation Season

Testing demand spikes every spring, and waiting weeks delays your system startup. We plan our calendar around that rush so customers are not choosing between compliance and a green lawn in May. Booking early in the year avoids the crush entirely.

Testimonials


See What Our Customers Are Saying!

  • Duis aute irure dolor in reprehenderit in voluptate velit esse
  • Duis aute irure dolor in reprehenderit in voluptate velit esse
  • Duis aute irure dolor in reprehenderit in voluptate velit esse
  • Duis aute irure dolor in reprehenderit in voluptate velit esse
  • Duis aute irure dolor in reprehenderit in voluptate velit esse
  • Duis aute irure dolor in reprehenderit in voluptate velit esse

Clean Water Protected, Compliance Handled

Backflow prevention is easy to treat as paperwork right up until the day a main break somewhere down the street reverses the flow into your house. The assembly is the only thing standing between an irrigation line and a kitchen faucet, and an untested one is a guess. JAC's Plumbing installs, tests, and repairs assemblies for homes and light commercial properties across Commerce City, CO and the surrounding Adams County area, filing the reports so deadlines stop being your problem. Contact us through the website and we will get your testing scheduled. Annual testing is a small commitment against a genuinely serious risk.

Frequently Asked Questions

  • What is backflow and why is it a problem?

    Backflow is water reversing direction in the supply piping, usually after a pressure drop from a main break or heavy fire flow. It can pull irrigation water, boiler chemicals, or other contaminants into the drinking water system. The assembly prevents that reversal.

  • How often does a backflow preventer need testing?

    Annually in Colorado, and some water providers require testing after any repair or relocation as well. The requirement applies to the assembly regardless of whether the connected system was used during the previous year. Reminders arrive from your provider.

  • What happens if my backflow test fails?

    The assembly needs repair or replacement, then retesting before it can be certified. Most failures involve worn check valve seats or relief valve components, which a rebuild kit resolves without replacing the entire device. Retesting confirms the repair worked.

  • Do residential properties need backflow prevention?

    Homes with irrigation systems, boilers, or certain water features typically do. Hose bibs need vacuum breakers as well. JAC's Plumbing surveys Commerce City, CO properties to identify which connections require protection under local requirements. Requirements vary between water providers.

  • Can I test my own backflow assembly?

    No. Testing requires certification and calibrated differential pressure gauges, and water providers only accept reports from certified testers. The procedure verifies specific pressure differentials that cannot be confirmed by observation or simple tools. Certification exists for exactly that reason.

  • Why did my backflow preventer break over winter?

    Water left in the assembly freezes and expands, cracking the body or damaging internal components. Proper winterization involves shutting off supply, opening test cocks, and draining the device completely before the first sustained freeze arrives. Insulated enclosures help in exposed locations.

  • Where should a backflow assembly be installed?

    Above ground, accessible, and at the required height above grade, downstream of the shutoff serving the hazard. Accessibility matters because the device must be tested annually, and buried or enclosed installations complicate that considerably. Clearances around the device matter too.

  • How long does a backflow test take?

    Usually 20 to 30 minutes per assembly once access is established. Our team at JAC's Plumbing schedules testing efficiently across Commerce City, CO so most properties are finished and documented within a single short visit. Multiple assemblies add time proportionally.