Backflow Testing & Prevention

Protecting your business’s water supply from contamination isn’t just good practice—it’s required by law. At Gilbert Plumbing Company, we provide certified, reliable backflow testing & prevention services for commercial properties throughout Gilbert, AZ. Whether you need annual testing, new backflow device installation, or emergency repairs, our experts ensure your plumbing systems stay compliant and safe.

What Is Backflow and Why Does It Matter?

Backflow occurs when water flows in the opposite direction—allowing potentially contaminated water to enter your clean water supply. This can happen due to a sudden drop in pressure, such as when a fire hydrant is used nearby or a water main breaks. Without a proper backflow prevention system, this reversal can pull harmful chemicals, bacteria, or waste into your potable water lines.

Common hazards introduced by backflow include:

  • Fertilizers and pesticides from irrigation systems
  • Human waste from sewer lines
  • Industrial chemicals from commercial processes
  • Dirty water from sinks, toilets, or dishwashers

To avoid these risks, most businesses are required to install and maintain backflow prevention assemblies—and have them tested annually by a certified technician.

Who Needs Backflow Testing?

Backflow testing is mandated by most local water authorities and applies to a wide range of commercial property types. If your business uses an irrigation system, fire suppression line, or has any connection to potentially hazardous systems, you likely need backflow testing and certification.

Examples of businesses that require testing:

  • Restaurants and food service establishments
  • Medical offices and laboratories
  • Car washes and laundromats
  • Apartment complexes and HOAs
  • Commercial kitchens and manufacturing facilities
  • Office buildings with irrigation or fire sprinkler systems

If you’re not sure whether your property requires testing, our team is happy to assess your setup and explain your compliance responsibilities under local code.

Our Commercial Backflow Testing Process

At Gilbert Plumbing Company, we follow a clear, step-by-step process to ensure your system is functioning properly and that you remain in compliance with city requirements.

Step Description
Visual Inspection We assess the condition and accessibility of your device
Pressure Differential Test We verify that check valves and relief valves are operating correctly
Documentation & Reporting We submit required test results to local water authorities
Repairs & Replacements If your unit fails, we provide fast, certified service

We also offer ongoing plumbing maintenance plans for businesses that want hands-off, scheduled compliance support.

Backflow Prevention Device Installation

If your property doesn’t yet have a backflow prevention device—or your existing one is damaged—we can install or upgrade your system to meet local code. Our licensed plumbers are trained in all major types of commercial backflow assemblies, including:

  • Double check valve assemblies (DCVA)
  • Pressure vacuum breakers (PVB)
  • Reduced pressure zone assemblies (RPZ)
  • Spill-resistant vacuum breakers (SVB)

We’ll evaluate your water system setup and recommend the appropriate unit based on your use case, size, and regulatory needs.

Preventing Contamination Before It Happens

Backflow devices are only part of the solution. Preventive planning is key to avoiding contamination events and code violations.

Here’s how we help businesses stay ahead:

If you experience an emergency, our emergency plumbing services team is ready to respond immediately and restore safe operation.

More Commercial Plumbing Services We Offer

Backflow testing is just one of the many services we provide for commercial properties in Gilbert. Our licensed team also specializes in:

We work with property managers, building owners, facility maintenance teams, and general contractors to deliver reliable service on every job—big or small.

Contact Us Today

Don’t risk contamination, code violations, or business disruptions. Let Gilbert Plumbing Company handle your annual testing, prevention, and repair needs with professional service and expert care.