Backflow Prevention Services In Phoenix

At ASAP Plumbing, we understand the critical importance of backflow prevention in safeguarding the quality of your water supply. Serving Phoenix, Chandler, Gilbert, Arizona, and the surrounding areas, we offer comprehensive backflow prevention services, ensuring that your commercial and residential buildings comply with health and safety regulations. Our services are designed to provide robust protection against the dangers of backflow in residential, commercial, and industrial settings.

What is Backflow?

Backflow occurs when there is a reversal in the flow of water in a plumbing system, which can lead to contaminants entering the clean water supply. This can happen due to changes in pressure within the system, potentially compromising the safety of drinking water.

The Importance of Backflow Prevention

Backflow preventers are crucial devices installed in plumbing systems to prevent the reverse flow of water. They are mandatory in commercial buildings and many residential properties, particularly where there’s a direct connection between the public water system and a potential source of contamination.

Our Backflow Prevention Services

  • Installation: We provide professional installation of backflow prevention devices, ensuring that they meet all local code requirements and industry standards.
  • Inspection: Regular inspections are vital to ensure that your backflow preventers remain in good working order and comply with local regulations.
  • Repair and Replacement: f your backflow prevention device is not functioning as it should, our team can carry out necessary repairs or replace the unit to ensure continuous protection against backflow.
  • Compliance Assistance: We assist our clients in staying compliant with local regulations by ensuring that all backflow prevention devices are installed, maintained, and tested as per the required standards.

ASAP Plumbing Backflow Preventer Services

Our backflow assembly experts are ready to meet all your needs, 24 hours a day.  Our services include the following.

  • Survey and assess your plumbing system — a good idea ahead of a formal test.
  • Install backflow preventers in new and existing construction.
  • Service and repairs for all types of devices.
  • Replace unrepairable assemblies.

Note:  Although a specific permit is not required for new construction, a permit is required to replace a failed device.  We’ll take care of that too.

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Understanding Backflow Preventers

Backflow preventers are essential devices installed in plumbing systems to create a physical barrier against reverse flow. This helps prevent the contamination of clean water supplies by potentially hazardous fluids. There are three main types of backflow preventers:

Reduced-pressure (RP)

  • Usage: Commonly utilized in high-risk environments such as soda fountains, industrial settings, and hospitals.
  • Protection Level: Offers maximum protection against backflow.

Pressure vacuum-breaker (PVB)

  • Usage: Primarily installed to prevent back-siphoning in residential and commercial irrigation systems. Also found in restaurant equipment like ice makers.
  • Protection Level: Provides a high level of backflow prevention.

Double check valve (DCV)

  • Usage: Employed for secondary protection in residential plumbing and with fire sprinkler systems that don’t use toxic fluids.
  • Protection Level: Adequate for low-hazard situations.

Why Is Backflow Prevention Necessary?

Backflow prevention is not just a regulatory requirement — it’s a critical measure for public safety. Without it, pressure changes in the plumbing system can cause contaminated water to flow backward, introducing harmful pathogens and chemicals into clean water supplies. This can occur due to:

  • Increased Downstream Pressure: From supply pumps, boilers, solar energy systems, etc.
  • Siphoning: Caused by breaks in the main water supply or high demands during events like firefighting.
  • Affordability: We offer cost-effective solutions without compromising on quality or compliance.
  • Area Coverage: Serving a wide area, we’re well-positioned to cater to clients throughout Phoenix, Chandler, Gilbert, and the surrounding regions.
  • Customer Satisfaction: We prioritize customer service and strive to ensure that our clients are fully satisfied with our work.



Your home deserves the best! Our commitment to our customers is to provide the highest level of service on every single call. Quality workmanship & premium parts is a promise we deliver on.

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Frequent Asked Questions

A backflow prevention device is a fixture installed on your plumbing system that prevents water from flowing backward and contaminating the clean water supply. It is important because it ensures that your drinking water remains safe by preventing the reverse flow of potentially contaminated water due to back pressure or back siphonage.

Common types include air gaps, reduced pressure zone (RPZ) assemblies, double check valve assemblies, and pressure vacuum breakers. Each type serves the same purpose but operates differently and is suited for different risk levels of contamination.

Most residential and commercial properties connected to a municipal water supply are required by law to have some form of backflow prevention, especially if there is a risk of contamination. This can include homes with irrigation systems, swimming pools, or fire suppression systems, as well as various industrial and commercial facilities.

It’s typically recommended that backflow prevention devices be tested and maintained at least once a year by a certified professional. Some local regulations might have specific requirements for testing frequency, so it’s important to be aware of and comply with local codes. Regular maintenance ensures the device functions properly and continues to protect the water supply from contamination.