Backflow Testing Services in Sioux Falls, South Dakota
Finding a reliable backflow testing professional in Sioux Falls, South Dakota is essential for maintaining a safe water supply and staying in compliance with local regulations. Our directory lists 6 backflow testing companies serving Sioux Falls and surrounding communities including Aberdeen, Rapid City.
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 Sioux Falls area.
Most water authorities in South Dakota 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 Sioux Falls 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.
6 listed providers
Howe, Inc.
Sioux Falls, SD · < 1 mi
“WOW!! That's all I can say about the experience I had with Seth & Chad at Howe! My water heater decided to go out randomly, as they do, and dumped water into my basement, during a very hectic / busy…”
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Midwestern Mechanical
Sioux Falls, SD · 3 mi
“Just had plumbing service performed by Midwestern Mechanical and am extremely pleased! Their technician Dustin Aalderks took on what started as a small plumbing enhancement in the basement, but…”
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Xtreme Fire Protection
No reviews yet
Testing Verified · Sioux Falls, SD · 3 mi

Mr. Rooter Plumbing of Sioux Falls
Sioux Falls, SD · 3 mi
“The valve in our shower rusted out and water was nearly free flowing from the spout even when you set it to off. What's worse is it was pouring out hot water so we had to turn the water off to the…”
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A1 Pumping & Excavating
Sioux Falls, SD · 5 mi
“After getting 18 inches of rain in a few days, my septic over flowed. These guys were out here same day and got me taken care of. Their employee did a fantastic job and took the time to explain how…”
Read more on GoogleEquity Green Lawn & Tree Experts
Sioux Falls, SD · 6 mi
“I used Equity Green's services for the lawn care at my old townhome and was glad to use their services again when I purchased my new home this spring. Moving in to a large corner lot was a big change…”
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Frequently Asked Questions About Backflow Testing in Sioux Falls
Many municipalities in South Dakota require annual backflow testing for commercial and residential properties with backflow prevention devices. Your local water authority in Sioux Falls 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 Sioux Falls 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 Sioux Falls 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.
Most jurisdictions in South Dakota require backflow testers to hold a current certification from an approved training program, typically involving classroom instruction, a hands-on practical exam, and continuing education credits. Some municipalities maintain their own approved-tester lists. Always verify certification before hiring.
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