Backflow Testing Services in Louisville, Kentucky
Finding a reliable backflow testing professional in Louisville, Kentucky is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 28 backflow testing companies serving Louisville and surrounding communities including Jeffersontown, Elizabethtown, Frankfort.
Whether you need annual backflow testing, RPZ (Reduced Pressure Zone) valve inspection, or cross-connection control services, the providers listed below offer professional testing services for both residential and commercial properties throughout the Louisville area.
Most water authorities in Kentucky require annual testing and reporting for all backflow prevention assemblies. A certified backflow tester will inspect your devices, perform the required differential pressure tests, and file compliance reports with your local water authority.
Browse the listings below to compare ratings, read customer reviews, and contact backflow testing professionals near Louisville directly. Use the filters above to narrow results by rating, review count, or specific services like RPZ testing and preventer installation.
Data source: Google Maps. Always verify licensing with your local water authority.
28 listed providers

Southern Plumbing & Heating Inc
Testing Verified · Louisville, KY · 2 mi
Roto-Rooter Plumbing & Water Cleanup
Testing Verified · Louisville, KY · 2 mi
“I recently used Rotor Rooter on a rental property of mine. We first tried two other plumbers who worked on this powder room toilet but they left and said it was better. However, The problem still…”
Read more on GoogleTony's Plumbing Co Inc
Testing Verified · Louisville, KY · 2 mi
“I am so happy we called Tony's. Our house is at least 85 years old. They came in after a plumbing company that Home serve sent us, that basically washed their hands with the project stating…”
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Golden Plumbing
Louisville, KY · 3 mi
“On December 1st, I contacted Joe Riley, who promptly referred me to Golden Plumbing to address a significant problem: an underground leak that was consuming an alarming 13,000 extra gallons of water…”
Read more on GoogleDauenhauer Plumbing Heating Air & Electric
Testing Verified · Louisville, KY · 6 mi
“Update: Dauenhauer reached out to me after leaving this review and they said they were sorry and wanted to make it right. They sent an amazing plumber that knew exactly how to fix the issues that…”
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Durbin Plumbing
Testing Verified · Louisville, KY · 6 mi
“A couple of weeks ago, I noticed my hot water was not working right. As a new homeowner, I contacted my warranty company which directed me to Durbin Plumbing. I was a little nervous after I read some…”
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Graham's Plumbing Co. Inc.
Testing Verified · Louisville, KY · 6 mi
“Plumbing issues I've had a few, to say the least, but Graham's plumbing has not only taken care of each problem, but also has gone above and beyond. What first began as a simple estimate call about…”
Read more on GoogleSt. Matthews Plumbing
Louisville, KY · 6 mi
“Great service, professional installation, old school kind of competence that gets things fixed right. Nice guys who worked with my school schedule and solved the major water heater leak I had in…”
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Brainer Plumbing
Louisville, KY · 6 mi
“Wow, am I impressed with these guys. A claim with my home appliance went so bad recently, I decided to not even deal with them. So when my water heater line started leaking, I found Brainer's on Next…”
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ARCO Engineering Inc
Testing Verified · Louisville, KY · 6 mi
“Quick turnaround on gauge recalibration. Staff always friendly.”
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Venhoff Plumbing & Heating Co
Testing Verified · Shively, KY · 6 mi
“I highly recommend Venhoff Plumbing. I have used them for my home and business. They are skilled, responsive, and very fairly priced. They installed new washer dryer hookups for me. Later, they…”
Read more on GoogleFerguson Plumbing Supply
Louisville, KY · 6 mi
“Shout out to Chris Hendricks! One of our out door faucets would not shut off. I had temporarily capped it. I called and talked to Chris. He did the research and found the exact model we have. That…”
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Maupin Plumbing
Louisville, KY · 7 mi
“We had a great experience with Maupin, and would definitely recommend. They helped us tap into an existing gas line and ran a new line to our garage so we could use a ventless heater. From the very…”
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Leanhart Plumbing
Louisville, KY · 9 mi
“CLOGGED TOILET IN A NE TOULET HOME… We’d already had another big name company come out for a toilet that wouldn’t flush on a new toilet. They couldn’t fix it without pulling the toilet off, so they…”
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Glanz & Buffat Plumbing, Heating and Cooling
Testing Verified · Louisville, KY · 11 mi
“As luck would have it my AC failed during the height of our recent heatwave. I called a company which I had a service contract with and their technician told me my heat pump needed replacement. He…”
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Cintas Fire Protection
Louisville, KY · 11 mi
“Mark Stump takes care of our monthly fire extinguisher care. Refills our empties. Mark’s attention to detail and professionalism is second to none. He is always pleasant and sure to great me when he…”
Read more on GooglePye-Barker Fire & Safety
Louisville, KY · 12 mi
“Highly recommend for service and Life Safety needs. PB takes care of our facility (Springview Manor). I called today for low air pressure in our dry system and had Thomas Rose there within 3 hrs…”
Read more on GoogleMaeser Master Services
Louisville, KY · 12 mi
“From the beginning, till the end, the experience was phenomenal. Walked into Home Depot for a water heater and they sent an online referral to Maeser for installation. Within minutes I was receiving…”
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DeBra-Kuempel
Testing Verified · Louisville, KY · 12 mi
Landmark Sprinkler Inc
Testing Verified · Louisville, KY · 12 mi
“Great company, great people that work there. Can't say enough good things about them. JB and Roger know their stuff, and are great guys! Thanks for the great job you all do.”
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Nine Line Plumbing
Testing Verified · Louisville, KY · 13 mi
“Had clogged sink drain in the bathroom. After some unsuccessful adventures with my dad we gave up and called in. They had Kyle out within a matter of hours. 2 hours after showing up everything…”
Read more on GoogleDavis & Davis Plumbing
Testing Verified · Louisville, KY · 14 mi
“This is hands down the best company I've ever dealt with for any sort of home owner's issue: repairs, electric, plumbing, etc. These guys went way above and beyond to help fix a plumbing issue we had…”
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Tom Sondergeld Plumbing
Testing Verified · Shepherdsville, KY · 15 mi
“My sump pump in the basement was giving off an awful smell, along with bath water draining out into my backyard instead of through the sewer line. I had three different plumbing companies out to try…”
Read more on GoogleDaniel Brown Plumbing
Louisville, KY · 16 mi
“We have been using Daniel's Plumbing for the last 25 years. Are most recent call was to have a freestanding bathtub installed along with a vanity and top and toilet reset. When I called the office I…”
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Helpful resources
Frequently Asked Questions About Backflow Testing in Louisville
Cross-connection control prevents contaminated water from flowing backwards into the clean water supply. Backflow prevention devices are installed at cross-connection points to protect public health. Regular testing ensures these devices function properly. Many municipalities in Kentucky require cross-connection control programs for commercial properties and irrigation systems.
Many municipalities in Kentucky require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in Louisville can confirm the exact testing schedule and deadlines for your area. Failing to test on time may result in fines or water service interruption.
Some certified testers near Louisville offer same-day or emergency scheduling for urgent situations such as a failed device, a compliance deadline, or a new construction inspection. Check individual provider listings above for availability, or request a quote to find a tester who can accommodate your schedule.
Look for testers with active state certification, strong Google reviews, and experience with your type of backflow preventer (PVB, DCVA, or RPZ). Ask whether they file compliance reports with your local water authority and request a written estimate before scheduling. Our directory lists testers near Louisville with real customer reviews.
RPZ (Reduced Pressure Zone) testing verifies that your reduced pressure backflow preventer is functioning correctly to protect your water supply from contamination. A certified tester uses specialized gauges to measure differential pressures across the assembly. RPZ devices are typically required for high-hazard connections.
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