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Download a list of certified testers (in a .pdf file) for your backflow prevention device.
A backflow preventer is a mechanical device that stops water from re-entering a building through your irrigation system. Without a backflow protection device, a drop in the city's water pressure could cause water in your irrigation system to be sucked into your drinking water system. If the irrigation system water is contaminated with lawn chemicals or bacteria, then a backflow situation could cause health problems.
Backflow prevention devices are required by a City of Columbia ordinance (Chapter 27, section 57) to protect the health of water customers with irrigation systems. Problems can arise with any mechanical device from wear and tear, so annual testing helps keep people safe. A certified tester is required to annually test the device because properly calibrated gauge equipment is the only way of making sure there is no contamination. A property owner should also check the system throughout the year to make sure no visible problems arise.
Please send your certified backflow preventer device testing results to:
Columbia Water Services Superintendent
P.O. Box 6015
Columbia, MO 65205
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