Backflow Testing
Residential & Commercial Plumbing Professioinals
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Reliable Backflow Testing
When you need certified backflow testing, Water Leak & Drain Busters brings licensed expertise and calibrated equipment to ensure your backflow prevention devices are functioning properly and protecting the public water supply. Every time you turn on a tap, you expect clean, safe water to flow out. But under certain conditions, water can flow backward—from your property into the public water system. This backflow can carry contaminants from irrigation systems, fire sprinkler systems, commercial kitchens, medical facilities, and industrial processes back into the drinking water that serves your community. Backflow prevention devices are the mechanical barriers that stop this from happening. But like any mechanical device, they can fail. Internal seals wear out. Springs weaken. Check valves become fouled with debris. When a backflow preventer fails, it provides no protection—and you might not know it’s failed until a backflow event contaminates your water supply. Annual backflow testing is required by law for most commercial properties and many residential properties with irrigation systems. Our certified backflow testers use calibrated gauge equipment to verify that each device is functioning within the required parameters. If a device fails, we can repair or replace it promptly to restore your protection and your compliance. For comprehensive commercial plumbing support, our Commercial Plumber service handles all aspects of commercial plumbing systems. For property managers, our Property Management Plumbing service coordinates backflow testing across multiple properties.
Our Backflow Testing Process
What Backflow Testing Involves
Backflow testing is a technical procedure that requires certified testers and calibrated equipment. Our certified technicians use a specialized differential pressure gauge to measure the performance of each backflow prevention device on your property. The test measures the pressure at which check valves open and close, verifies that relief valves activate at the correct pressure, and confirms that the device prevents reverse flow under all required conditions. We test all types of backflow prevention devices—reduced pressure zone assemblies, double check valve assemblies, pressure vacuum breakers, and atmospheric vacuum breakers. Each type requires different test procedures, and our technicians are certified for all of them. The testing process for each device typically takes fifteen to thirty minutes. During testing, water service to the affected lines may be briefly interrupted. We coordinate with you to schedule testing at a convenient time and minimize any disruption to your operations. After testing, we provide a detailed test report documenting the results for each device. If the device passes, we submit the report to the local water authority on your behalf, fulfilling your annual compliance requirement. If the device fails, we explain what’s wrong and provide a quote for repair or replacement.
Repair and Replacement of Failed Devices
When a backflow preventer fails testing, prompt repair is essential—not just for compliance, but because a failed device provides no protection against contamination. Common causes of failure include worn internal seals, broken check valve springs, debris fouling the check valves, and freeze damage from improper winterization. Many failures can be repaired by rebuilding the device with new internal components—seals, springs, and check valves. This is often more cost-effective than full replacement, especially for newer devices. We carry common repair kits on our trucks for same-visit repairs on many device types. When a device is too damaged to repair, too old to be worth rebuilding, or no longer meets current code requirements, we provide complete replacement. We install a new, code-compliant device of the appropriate type and size for your application. After installation, we test the new device and submit the passing test report to the water authority. For irrigation system backflow concerns, our Sprinkler Services can be coordinated with backflow testing for complete system care. For comprehensive plumbing support, our Plumbing Services team handles any related plumbing issues.
Do You Need Backflow Testing?
Backflow testing requirements vary by jurisdiction and property type, but certain situations almost always require annual testing. Commercial properties of all types—office buildings, retail stores, restaurants, medical facilities, and industrial sites—are typically required to have backflow prevention devices tested annually. The local water authority maintains records of which properties have devices and when testing is due. Failure to test on time can result in fines, water service disconnection, and liability exposure. Properties with irrigation systems often require backflow protection to prevent fertilizers, pesticides, and lawn chemicals from being drawn back into the drinking water supply. Even residential irrigation systems typically require backflow prevention, and many jurisdictions require annual testing. Properties with fire sprinkler systems require backflow prevention because the stagnant water in sprinkler pipes can harbor bacteria and corrosion products that must never enter the drinking water supply. Properties with auxiliary water supplies—wells, ponds, or reclaimed water systems used for irrigation alongside municipal water—require backflow prevention to prevent cross-contamination between the two water sources. Properties with commercial kitchens, medical equipment, dental offices, laboratories, or industrial processes all require backflow protection appropriate to the specific hazards present. If you’re unsure whether your property requires backflow testing, we can review your system and advise you. For restaurants requiring backflow testing alongside other plumbing services, our Restaurant Plumbing service provides comprehensive commercial kitchen plumbing care.
The Consequences of Skipping Backflow Testing
The annual backflow testing letter from the water authority is easy to set aside, but the consequences of non-compliance can be severe. Fines and penalties vary by jurisdiction but typically escalate the longer testing is overdue. Some water authorities charge monthly fines until testing is completed. Water service disconnection is the ultimate enforcement tool. If your backflow testing remains overdue, the water authority can shut off water to your property. For a business, this means you cannot operate. For a homeowner, this means no water for drinking, bathing, or sanitation. Liability exposure is the most serious consequence. If a backflow incident contaminates the public water supply and your device had not been tested as required, you could face significant legal liability for the resulting damages, including the costs of water system flushing, testing, and public notification. Insurance coverage may be affected. Some commercial insurance policies require compliance with all applicable codes and regulations as a condition of coverage. A backflow incident involving an untested device could result in denied claims. The simple solution is annual testing, performed on time, by certified professionals. Our team handles the complete process—testing, documentation, and submission to the water authority—so you stay compliant without the administrative burden. For leak detection after backflow testing, our Leak Detection service can identify any issues discovered. For water quality improvements, our Water Filtration Systems service provides clean water solutions. For fixture installations, our Plumbing Fixture Installation service handles upgrades. For water heater concerns, our Water Heater Repair service ensures reliable hot water.
Why Water Leak & Drain Busters Is the Right Choice for Backflow Testing
Certified Testers, Calibrated Equipment. Backflow testing requires specific certification and annually calibrated gauge equipment. Our testers hold current certification and our test gauges are calibrated on schedule to ensure accurate results. The test reports we submit are accepted by all local water authorities in our service area.
Complete Service from Testing to Repair. When you hire us for backflow testing, you’re also lined up for repair or replacement if your device fails. We don’t just hand you a failed test report and wish you luck finding someone to fix it. We provide the repair quote, perform the work, retest the device, and submit the passing report—all through a single provider. For comprehensive plumbing support, our Plumbing Services team handles all plumbing needs. Our Emergency Plumber service provides 24/7 response. Our Drain Cleaning and Hydro Jetting services keep drains flowing. Our Sewer Line Repair , Pipe Lining , and Sewer Camera Inspection services address underground infrastructure.
Schedule Your Backflow Testing Today
If you’ve received a testing notice from your water authority, or if your annual testing is coming due, don’t wait until the deadline. The licensed, certified backflow testers at Water Leak & Drain Busters will test your devices, handle all documentation and submission, and provide any repairs needed to keep your system compliant and your water supply protected. We also offer complete Plumbing Services, Emergency Plumber, Commercial Plumber, Drain Cleaning, Water Heater Repair, Leak Detection, Sewer Line Repair, Sewer Camera Inspection, Hydro Jetting, Pipe Lining, Plumbing Fixture Installation, Water Filtration Systems, Property Management Plumbing, and Restaurant Plumbing —making us your complete plumbing resource. Call us today or book online. We’re proud to be the trusted choice for backflow testing.
Frequently Asked Questions About Backflow Testing
What is backflow and why is it dangerous?
Backflow is the reverse flow of water from a property back into the public water supply. It can occur when there’s a sudden drop in water main pressure—from a fire hydrant use or a water main break—creating a suction effect that draws water from private pipes back into the public system. If that water contains contaminants from irrigation systems, fire sprinklers, commercial kitchens, or industrial processes, it can contaminate the drinking water supply.
How do I know if I need backflow testing?
Most commercial properties require annual backflow testing. Residential properties with irrigation systems, fire sprinklers, or auxiliary water supplies also typically require testing. If you receive a notice from your water authority, testing is required. If you’re unsure, we can review your system and advise you.
How often does backflow testing need to be performed?
Annual testing is the standard requirement for most jurisdictions. Some water authorities may require more frequent testing for high-hazard facilities. Your testing notice from the water authority will specify the required testing frequency.
What happens if my backflow preventer fails the test?
We’ll provide a detailed explanation of what failed and a quote for repair or replacement. Many failures can be repaired by rebuilding the device with new internal components. If replacement is needed, we’ll install a new, code-compliant device and test it to ensure it passes.
How long does backflow testing take?
Testing typically takes fifteen to thirty minutes per device. If multiple devices need testing, the total time depends on how many devices are on your property. We can provide a time estimate based on your specific situation.
Do I need to be present for backflow testing?
For most properties, you don’t need to be present as long as we can access the devices. We’ll need to know the location of each backflow preventer—typically near the water meter, in a mechanical room, or in a valve box outdoors. For commercial properties, we coordinate with facility managers for access.
Do you submit the test results to the water authority?
Yes. For passing tests, we handle the complete submission process. You receive a copy of the test report for your records, and we submit the results to the local water authority on your behalf.
What is the difference between the types of backflow preventers?
Reduced pressure zone assemblies provide the highest level of protection and are used for high-hazard applications. Double check valve assemblies are used for low-hazard applications. Pressure vacuum breakers and atmospheric vacuum breakers are used primarily for irrigation systems. Our certified testers can identify which type you have and test it accordingly.