Study shows river water, sewer lines are possible sources
Viruses from human sources occur in the La Crosse, Wisconsin municipal drinking water supply prior to its chlorination, according to a study published today in the scientific journal Applied and Environmental Microbiology. Although the city’s treated water meets or exceeds state and federal standards for drinking water, researchers and public health officials agree that more study is needed to pinpoint sources of the viruses and to determine if some viruses are surviving chlorination and making people sick with diarrhea and vomiting.
The objective of the study, by Marshfield Clinic Research Foundation (MCRF) and the U.S. Geological Survey (USGS), was to determine whether the amount of Mississippi River water moving through the riverbank and infiltrating city wells was related to the frequency of virus detection in the wells.
Chris Schellpfeffer | EurekAlert!
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