The city advised residents on Wednesday to boil their tap water until further notice after a water sample taken at Greenville High School tested positive for E. coli bacteria.
Water samples taken from a nearby National Guard armory and a residence also tested positive for E. coli, Mike Chesher, Greenville's public works director, told The Daily News for a story posted on the newspaper's Web site.
The city notified the Michigan Department of Environmental Quality and posted warning signs at the high school, he said.
The extent of the contamination problem was unclear but Chesher encouraged customers of the city's water system "to be careful for the next few days." Most strains of E. coli, which normally is found in the intestinal tracts of humans and other animals, are harmless but some can cause illness or even death.
The school's freshman and junior varsity football games originally scheduled to be played at home Thursday against Belding High School were moved to Belding.
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