The crisis began in 2014 when a state-appointed emergency manager switched Flint from Detroit water to Flint River water to save money. The corrosive water caused lead to leach from old pipes. Flint returned to the Detroit system in October 2015 after elevated lead levels were discovered in children.
But officials remain concerned that damaged pipes could continue to leach lead, which can cause behavior problems and learning disabilities in children as well as kidney ailments in adults.
Gov. Rick Snyder declared a state of emergency in Flint in Jan. 5, 2016. President Barack Obama signed an emergency declaration on Jan. 16, 2016, but denied Snyder's request for a disaster declaration based on the legal requirement that such relief is intended for natural events, fires, floods or explosions. (AP)
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