Flint’s drinking water source is changed from Lake Huron and the Detroit River to a less costly source of the Flint River.

General Motors stops using Flint River water, fearing corrosion in its machines.

Flint is found to be in violation of the Safe Drinking Water Act.

A city test reveals high lead content in the water of a Flint resident's home.

A study from the local Hurley Medical Center found that 2.1 percent of children age 5 and under had elevated blood lead levels prior to the switch to Flint River water, compared to 4.0 percent after the switch.

Flint switches back to the Detroit water supplier.

Flint Mayor Karen Weaver declares a state of emergency over the elevated lead levels in the city's water.

Supporting its preliminary conclusion, the task force charged with investigating the causes of the Flint water crisis says in its final report that the MDEQ bears primary responsibility.

Despite improved lead levels in Flint's water, it remains unsafe to drink without a filter, according to results released from Virginia Tech researchers.

A federal emergency declaration over Flint’s lead-tainted water crisis ends, but state officials say work continues to fix the drinking water system and provide services to city residents.

The Michigan Department of Environmental Quality declares that, in a six-month-long study, the city's water tested below the federal limit.

The state announces the distribution of free bottled water in the city is ending.

25,042 water service lines have been excavated, resulting in the replacement of 9,516 lead pipes and the verification of 15,526 existing copper pipes.

Michigan Attorney General Dana Nessel announces charges of willful neglect of office against former Governor Rick Snyder. Eight other people were also named in the indictment.