Annual Backflow Testing

Protect Your Water Supply

Backflow prevention devices keep contaminated water from flowing backward into your home or the city water supply. But even the best systems can fail without warning. That’s why many local water authorities — including those in Howard and Prince George’s Counties — require annual backflow testing by a certified plumber.

At TradeWorks Plumbing, we make the process simple, fast, and fully compliant.

What is Backflow - and Why Does It Matter?

Backflow happens when water flows in the wrong direction, pulling contaminants like fertilizers, sewage, or chemicals into your clean water supply. This can occur during pressure changes caused by things like burst pipes, firefighting efforts, or system malfunctions.

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Backflow prevention devices (often installed on sprinkler systems, commercial properties, or certain plumbing setups) are your home’s defense against this kind of contamination. But they must be tested yearly to ensure they’re working properly.

Schedule Your Certified Backflow Test Today

Don’t risk non-compliance or unsafe water. Fill out the form or call us directly to schedule your annual test. We’ll handle everything, including the paperwork,k so you stay protected and up to code.

What Is Included in a Backflow Test?

Our licensed and certified backflow testers will:

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• Identify and locate your backflow prevention device
• Shut off downstream water to isolate the system
• Connect test gauges to measure pressure levels
• Check for proper valve function, leaks, or pressure drops
• Confirm the device is preventing backflow as intended
• Provide a full test report and submit results to your local water authority
• Advise on repairs or replacement if your device fails

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We work with all types of backflow preventers, including pressure vacuum breakers (PVBs), double check assemblies (DCAs), and reduced pressure zone (RPZ) devices.

What Happens If You Skip Your Test?

Failing to test your backflow preventer annually can lead to:

• Contaminated drinking water
• Fines or water service interruptions from your utility company
• Invalid property inspections for real estate or commercial compliance
• Plumbing system failure during a backflow event

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Annual testing is a small investment in your home’s or business's safety and in your community’s clean water.

Do I Need Backflow Testing?

You likely have a backflow prevention device if:

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• You have an irrigation or sprinkler system
• You own a commercial or multi-family property
• You have a fire suppression system
• Your property has a boiler or well connection
• Your utility company has notified you of the requirement

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Not sure? We’ll help you find out and test what’s needed.