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Genesee County announces a new pipeline is being designed to deliver water from Lake Huron to Flint. The plan is to reduce costs by switching the city's water supplier from the Detroit Water and Sewerage Department to Karegnondi Water Authority.
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Residents immediately complain about the smell, taste and appearance of the water.
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The city announces fecal coliform bacterium has been detected in the water supply, prompting a boil water advisory for a neighborhood on the west side of Flint. The advisory is lifted on August 20.
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The Michigan Department of Environmental Quality issues a paper outlining possible causes for the contamination issues. Among the problems are leaking valves and aging cast iron pipes susceptible to a buildup of bacteria.
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Detroit offers to reconnect Flint to its water system, but Flint leaders insist the water is safe.
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Doctors urges Flint to stop using the Flint River for water after finding high levels of lead in the blood of children. However, state regulators insist the water is safe
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Snyder announces that the state will spend $1 million to buy water filters and test water in Flint public schools, and days later calls for Flint to go back to using water from Detroit's system.
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Michigan National Guard begins helping to distribute bottled water and filters, while Snyder asks the federal government for help
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Michigan health officials report an increase in Legionnaires' disease cases — some fatal — over the past two years in the county that includes Flint.
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A governor-appointed panel concludes that the state of Michigan is "fundamentally accountable" for the crisis. This is due to decisions made by the environmental regulators.
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Two state officials and a local official are charged with evidence tampering and other crimes in the Michigan attorney general's investigation
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Residents are cautioned that it will take weeks for the system to be properly flushed out and there may be lingering issues
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Researchers report that water in Flint is improving after finding no detectable levels of lead in 57 percent of homes
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Congressional Republicans quietly close a yearlong investigation into Flint's crisis, faulting both state officials and the Environmental Protection Agency.
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The Michigan Civil Rights Commission issues a report that finds "systemic racism" going back decades is at the core of problems that caused the water crisis in the majority black city of Flint.
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The EPA announces that it has awarded $100 million to Flint for drinking water infrastructure upgrades.
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Water lines at 18,000 homes in Flint will be replaced under a landmark deal approved by a judge, marking a milestone in the effort to overcome the decision to draw water from the Flint River without treating.
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Michigan Health and Human Services Director Nick Lyon is accused of failing to alert the public about an outbreak of Legionnaires' disease that killed 12 people in Flint. Him, and four others are charged with involuntary manslaughter.
Gov. Snyder is not charged.
