Backflow Testing, Repair, and Installation

Backflow Prevention: What’s the big deal?

Backflow prevention devices protect your drinking water from contamination. While they’re often out of sight and out of mind, they play a critical role in keeping harmful substances—like chemicals, bacteria, and debris—from flowing backward into your clean water supply.

Backflow issues usually don’t cause obvious symptoms until there’s a serious problem or a failed inspection. That’s why routine testing, proper installation, and timely repairs are essential for both safety and code compliance.

That being said, let’s start with the basics.

Why hire MPG Plumbing for backflow services?

Unlike companies that only perform inspections or installations, MPG Plumbing provides complete backflow services, including testing, repair, and new device installation. Our licensed plumbers are trained to work with all common types of backflow prevention assemblies for residential, commercial, and irrigation systems.

Because we handle everything in-house—from testing and documentation to repairs and replacements—you work with one trusted team that understands both plumbing systems and local compliance requirements.

What is backflow and why does it matter?

Backflow occurs when water flows in the opposite direction of its intended path, potentially pulling contaminants into the potable water supply. This can happen due to:

  • Backpressure (higher pressure on the customer side)

  • Backsiphonage (a sudden drop in supply pressure)

Backflow prevention devices are designed to stop this reverse flow and protect public health. When these devices fail or are missing, contaminated water can enter the drinking water system.

What causes backflow device problems?

Backflow preventers are mechanical devices and can fail due to:

  • Normal wear and tear

  • Debris or sediment buildup

  • Corrosion or aging components

  • Freezing damage

  • Improper installation

  • Lack of annual testing and maintenance

Without regular testing, these issues can go unnoticed until a device fails inspection or stops working altogether.

What is backflow testing and how does it help?

Backflow testing involves using certified testing equipment to verify that the device is operating correctly and preventing reverse water flow. Testing typically includes:

  • Inspecting the device and valves

  • Measuring pressure differentials

  • Verifying proper operation

  • Providing required documentation

Annual testing is often required by local water authorities for commercial properties, irrigation systems, and certain residential applications.

What happens if backflow issues are ignored?

Ignoring backflow requirements can lead to:

  • Failed inspections and compliance violations

  • Water service interruptions

  • Fines or penalties

  • Risk of water contamination

  • Emergency repairs or forced replacements

Routine testing and maintenance are far less costly than dealing with compliance issues or public health risks.

How do I know if my backflow device has a problem?

Many backflow issues aren’t visible without proper testing, but warning signs may include:

  • Failed annual backflow test

  • Leaking from the device

  • Corrosion or visible damage

  • Low water pressure

  • Notification from the city or water authority

If your device fails a test or shows signs of damage, prompt repair is required to stay compliant and protect the water supply.

Trust MPG Plumbing with your backflow needs

Our plumbers perform backflow testing, repairs, and installations on a regular basis. We understand the importance of accuracy, documentation, and compliance—and we make the process as simple as possible for property owners and managers.

Whether you need annual testing, emergency repairs, or a new backflow device installed, MPG Plumbing is ready to help.

Don’t leave water safety or compliance to chance. Contact MPG Plumbing today for professional backflow testing, repair, and installation services.