More than 1 million private wells that supply drinking water in mostly rural parts of the Midwest could face the risk of contamination from floodwater, posing a health concern that could linger long after the flooding subsides. Major flooding along the Missouri and Mississippi rivers and several smaller waterways has inundated states in the middle of America, from the Canadian border south to Kentucky. The National Weather Service has warned that with snowmelt in northern states only beginning, the threat of additional flooding persists well into spring.
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