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Test well water annually

Media contact:

Jason Vance
Writer
University of Missouri Extension
Phone: 573-882-9731
Email: VanceJJ@missouri.edu

Published: Friday, Dec. 18, 2015

Story source:

Bob Broz, 573-882-0085

COLUMBIA, Mo. – The human body is more than 70 percent water and it needs to be replenished every day. But how good is the water you’re drinking?

If you have a private well, testing the water once a year is a good idea.

“Mainly what we want to check for is E. coli bacteria,” says Bob Broz, University of Missouri Extension water quality specialist.

Several years ago, a Centers for Disease Control and Prevention survey showed that about one in two private wells in Missouri had high levels of bacteria.

Broz says well owners should contact their county health department and get a water test bottle. The small bottle will include instructions for collecting a water sample and sending it to a state-certified testing lab.

Broz recommends collecting and shipping your sample early in the week for prompt testing. “They don’t want you to send it on a Thursday or Friday,” he says. “That water sample will sit somewhere not being properly handled for three or four days and that may mess up the test.”

Well owners may also want a domestic suitability test, particularly if it’s a new well. The MU Soil and Plant Testing Laboratory (http://soilplantlab.missouri.edu/soil) will do a suitability test for $35. Broz says it provides information on hardness, pH, nitrates, sulfates, copper and other things that may be found in water in Missouri. He notes that your well water may be safe to drink even if it’s not aesthetically pleasing due to high levels of minerals.

“Testing for bacteria once a year is one way to keep you and your family healthy,” Broz says. “Testing for bacteria doesn’t guarantee the water is safe, but it reduces the concern of a bacterial infection.”

If your well tests positive for bacteria, follow the procedures for shock chlorinating your well. A wellhead protection assessment can help identify ways contamination might be getting into your well. For more information, the MU Extension guide “Bacteria in Drinking Water” (WQ102) is available for free download at http://extension.missouri.edu/p/WQ102.