Backflow Prevention
Certified Backflow Preventer Testing
Annual testing, installation, and repair of backflow prevention devices. Keeping your water supply safe and your property compliant.
Certified Backflow Technicians
Protect Your Drinking Water
Backflow preventers keep contaminated water from flowing backward into your clean water supply. Most municipalities require annual testing of these devices. And failure to comply can result in fines, water shutoff, or liability if contamination occurs.
Metcalf Plumbing employs certified backflow preventer testers who handle annual inspections, new installations, and repairs. We file the required paperwork with your municipality and provide you with certification documentation.
Whether you need a new device installed for a commercial property, your annual residential test completed, or a failed preventer repaired and re-certified, we handle the entire process.
- Annual backflow preventer testing
- New device installation
- Repair and re-certification
- Municipality compliance paperwork
- Residential and commercial service
- All preventer types: RPZ, DCVA, PVB
Backflow Expertise
Our Backflow Services
Annual Testing
Most municipalities require annual backflow preventer testing. Our certified technicians perform the test, document results, and file compliance paperwork on your behalf.
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Installation
New construction, irrigation systems, and commercial properties often require backflow preventer installation. We size, install, and certify new devices to code.
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Repair & Certification
Failed backflow tests mean your device needs repair or replacement. We diagnose the issue, make repairs, re-test, and provide updated certification documentation.
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Signs You Need Backflow Service
01
Discolored water coming from taps
02
Strange taste or odor in your water
03
Reduced water pressure throughout property
04
Notice from your municipality about compliance
05
Visible damage or corrosion on the preventer valve
Why Homeowners Choose Metcalf
$0
Commissions
Our plumbers are paid hourly. They have zero incentive to upsell you.
23+
Years
Over two decades serving Baltimore-area homeowners.
Same-Day
Response
Fast response times because we know plumbing emergencies can’t wait.
4.9
Stars
Hundreds of five-star reviews from satisfied customers.
Mandatory
Maryland Requires Annual Backflow Testing
Why municipalities require it. Backflow can siphon contaminants from irrigation systems, boilers, and chemical reservoirs back into the public drinking supply. Annual testing protects everyone on your water line.
Who has to test. Commercial properties, multi-family buildings, irrigation systems, fire suppression systems, and certain residential setups with auxiliary water sources all require annual certification by a licensed tester.
What happens if you skip it. Missed tests trigger municipal fines, escalating penalty fees, and in some jurisdictions a complete water shut-off until certification is brought current.
Good to Know
Frequently Asked Questions
What is backflow testing and why is it required?
Backflow testing verifies that your backflow preventer is stopping contaminated water from reversing into the clean supply. Many jurisdictions require annual certified testing.
Who needs annual backflow testing?
Commercial properties, irrigation systems, and many multi-unit buildings. If you run a commercial property or have irrigation, you likely need it.
Are you certified to test backflow devices?
Yes. Our testing is performed and documented by certified technicians, with results submitted as your jurisdiction requires.
What happens if my device fails the test?
We’ll repair or replace the backflow preventer and re-test to bring you back into compliance.
How long does a backflow test take?
Most tests take well under an hour. Call (410) 242-3111 to schedule your annual certification.
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Where We Work
Serving Baltimore & Howard County
We bring this service to Catonsville, Ellicott City, Columbia, Elkridge, Arbutus, Towson, and every community we serve.
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