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				Over the weekend, supplies were cut at 16 schools and bottled 
				water was provided until water coolers arrive, Detroit Public 
				Schools Community District Superintendent Nikolai Vitti said.
 Although there is no evidence of excessive levels of copper or 
				lead in other schools, Vitti decided to shut off water 
				throughout the system "until a deeper and broader analysis can 
				be conducted to determine the long-term solutions for all 
				schools," he said in a statement.
 
 "We have no reason to believe that any children have been 
				harmed," said Chrystal Wilson, a spokeswoman for the district.
 
 About 50,000 students are enrolled in the district, which 
				operates 110 schools, according to its website. Detroit public 
				schools students are due to start classes on Tuesday, although 
				teachers are already working.
 
 The Great Lakes Water Authority and Detroit Water and Sewerage 
				Department said in a statement that the water, after treatment, 
				surpassed all federal and state standards for quality and 
				safety. They attributed any drinking water contamination in the 
				affected schools to the antiquated plumbing in the buildings.
 
 Detroit's drinking water comes from the Detroit River.
 
 Water safety is a sensitive issue in Michigan, where lead 
				contamination in the water supply of Flint prompted dozens of 
				lawsuits and criminal charges against former government 
				officials.
 
 Medical research has linked lead to a stunting of children's 
				neural development. Exposure to copper can cause 
				gastrointestinal distress and liver or kidney damage, according 
				to the U.S. Environmental Protection Agency.
 
 Flint switched its water supply to the Flint River from Lake 
				Huron in April 2014 to cut costs. The corrosive river water 
				caused lead to leach from pipes. Flint switched back to Lake 
				Huron water in October 2015, but the contamination continued.
 
 (Reporting by Suzannah Gonzales in Chicago; Editing by Cynthia 
				Osterman and Peter Cooney)
 
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