April 25, 2014, the Day Flint Switched Its Water Source

The ceremony was short. On April 25, 2014, at the city's water treatment plant, the mayor of Flint, Michigan, pressed a button, and the city stopped buying treated water from Detroit and began drawing its own from the Flint River. Officials raised glasses of water in a toast. Local news cameras recorded it as a small civic milestone, a story about saving money in a city that badly needed to. Nobody in the room had been elected to make the decision being celebrated. The choice to use the river had been made under a state-appointed emergency manager, an official with the power to override the city council and the mayor on financial matters. Within weeks, residents began calling City Hall about water that smelled wrong and came out of the tap brown. It would take a year and a half, a pediatrician, a team of engineers from Virginia and a mother who would not stop asking questions before the state admitted what had happened.

In short: Flint switched to Flint River water in 2014 to save money while it was governed by a state-appointed emergency manager, and state regulators failed to require the corrosion treatment that would have kept lead in old pipes from leaching into the water. The disaster was as much about democracy as chemistry: the people who drank the water had lost the power to hold anyone accountable for it.

A city run from Lansing

To understand April 25, start with a law. In 2011 Michigan expanded the powers of the emergency managers the state could appoint to run financially distressed cities and school districts. These officials could cancel contracts, sell assets and set aside the authority of elected local leaders. In November 2012 Michigan voters repealed that law in a referendum. Weeks later, the legislature passed a replacement, known as Public Act 436, that restored most of the same powers. Because it included an appropriation of money, it could not be put to a referendum in the same way. The voters had said no, and the legislature found a way around them.

By the time Flint's water decision was being made, a large share of Michigan's Black residents lived in cities or school districts under emergency management. Flint, a majority-Black city that had lost most of its auto jobs and much of its population since the 1970s, was one of them. A poverty rate around forty percent meant a shrinking tax base, rising costs for the pensions and pipes of a much larger city, and a state government that had decided the answer was to put an outside manager in charge.

There is a fair case for emergency managers, and it should be stated plainly. When a city cannot pay its bills, someone has to make painful choices, and local politics sometimes makes them impossible. Supporters argued that a manager could cut through deadlock and protect residents from a collapse in basic services. The answer from Flint is that a manager accountable only to the state capital had every incentive to cut costs and very little reason to listen to the people drinking the water.

Why the river, and why it seemed temporary

The switch was supposed to be a bridge. In 2013 Flint had agreed to join a new regional pipeline, the Karegnondi Water Authority, that would eventually bring water from Lake Huron. Detroit's water system responded by giving notice that it would end Flint's existing contract. While the new pipeline was being built, Flint needed a source. Officials chose the Flint River and the city's old treatment plant, which had served mainly as a backup for decades.

That choice was about money, and the savings on paper were real. The problem was that treating river water is harder than treating lake water from a system that had been doing it for years. River water varies with the seasons, carries more organic material and needs careful chemistry. Flint's plant had to be brought back into full-time service quickly.

The chemistry everyone should have known

The most important fact about Flint is a fact about pipes. Many older American cities still deliver water through lead service lines, the small pipes connecting the water main under the street to each house. Lead pipes are safe enough only if the water flowing through them does not dissolve the lead. Water systems manage that by adding corrosion control, usually a phosphate compound that forms a thin protective layer on the inside of pipes.

Federal law, through the Lead and Copper Rule adopted in 1991, requires large systems to maintain optimized corrosion control. Detroit's water had it. When Flint began treating river water, the state's Department of Environmental Quality did not require corrosion control to be added from the start. State regulators later said they had read the rule to allow a system to monitor first and decide later. Investigators who examined the decision found that reading was wrong.

River water that was more corrosive than Detroit's water, without the protective treatment, began stripping the inside of Flint's pipes. Iron made the water brown. Lead, which is invisible and has no taste, came with it.

The signs piled up through 2014. The city issued boil-water advisories after bacteria were detected. It then added more chlorine, which created disinfection byproducts that put it in violation of other federal standards. In October 2014 General Motors stopped using Flint water at its engine plant because the water was corroding its parts. Think about that for a moment: a manufacturer decided the water was too corrosive for engine parts, and the state kept telling families it was safe to drink. There was also an outbreak of Legionnaires' disease in the Flint area in 2014 and 2015 that killed at least twelve people; investigators and researchers later linked it to the water switch, although the state contested that link for some time.

How the testing hid the problem

If lead was pouring into homes, a reasonable reader might ask, why didn't the required tests catch it? The answer is a lesson in how a rule can be followed on paper and defeated in practice.

Under the federal lead rule, a water system does not test every home. It samples a set of houses, supposed to be the ones most likely to have lead pipes, and looks at the results as a group. If more than ten percent of the samples exceed fifteen parts per billion, the system has crossed what the rule calls the action level and must take further steps, such as public education and pipe replacement.

That design leaves room for mischief. If the homes chosen are not the ones with lead lines, the results look clean. If residents are told to run the tap before collecting a sample, or to remove the little screen at the end of the faucet, lead that would have shown up is flushed away. Del Toral's memo and the Virginia Tech team both raised concerns about practices like these in Flint. Reporting later showed that state regulators had also set aside two high samples from one round of testing in 2015, which kept the city's result under the action level. The state argued those homes did not meet the sampling criteria; critics saw it as a way to make the numbers come out right.

None of that required a grand conspiracy. It required an agency that expected the water to be fine, a set of rules that let it look for confirmation, and nobody with the authority to insist on a harder look. The newer federal lead rules adopted since Flint tighten sampling for exactly these reasons, requiring tests that better capture water sitting in a lead line.

The people who would not let it go

The official record of Flint is a record of residents being told they were wrong. They brought jugs of discoloured water to public meetings. They held up rashes and hair loss. They were told the water met standards.

One resident in particular forced the issue. Lee-Anne Walters, a mother whose children were getting sick, had her water tested and found extremely high lead levels. She reached Miguel Del Toral, a regulations manager at the EPA's regional office in Chicago, who in 2015 wrote an internal memo warning that Flint lacked corrosion control and that the state's sampling methods could be hiding the problem. The memo leaked to a reporter. Walters also contacted Marc Edwards, an engineer at Virginia Tech who had exposed lead in Washington, D.C.'s water a decade earlier. In the late summer of 2015 his team, working with residents, sampled hundreds of Flint homes and found widespread elevated lead.

Then, in September 2015, a pediatrician at Hurley Medical Center, Dr. Mona Hanna-Attisha, presented data showing that the share of young children with elevated lead in their blood had risen after the switch. State officials first questioned her analysis, then confirmed it within days. That story has its own post on this site, because the way the state responded to her is its own lesson.

In October 2015 Flint reconnected to Detroit's water. In January 2016 the governor declared an emergency, and President Obama declared a federal emergency days later. The damage to the pipes, and to the city's trust, was done.

What the investigations found

Several official reviews followed. A task force appointed by Governor Rick Snyder reported in March 2016 that the state's environmental agency bore primary responsibility for the crisis and called it a case of environmental injustice: residents of a majority-Black, poor city had not been given equal protection under environmental laws. In 2017 the Michigan Civil Rights Commission went further, concluding that the response reflected systemic racism built into history and policy rather than the intent of any individual.

There were criminal cases, too. Charges were brought against state and local officials, dropped, brought again, including against the former governor, and then unwound after the Michigan Supreme Court ruled in 2022 that the one-judge grand jury procedure used to indict several of them was improper. No senior official went to prison for the decisions that poisoned the city. A civil settlement, led by about $600 million from the state, was approved in 2021 to compensate residents, with most of the money reserved for children.

The reasonable conclusion is that Flint was not one villain's crime. It was a system with no one inside it who was both responsible for the water and answerable to the people drinking it.

The democracy problem underneath the water problem

Here is the argument I would make, and it is an argument. Flint is usually filed under environmental policy, and it belongs there. But the root failure was political. When voters repealed the emergency manager law, the state passed it again in a form they could not touch. When residents complained, there was no elected official with the power to change course who also had to face them at the ballot box. Accountability had been engineered out of the system in the name of fiscal responsibility.

Democrats are not blameless in the story of Flint's decline, and progressives should resist making it a simple partisan tale. The city's long collapse was the product of deindustrialization, highway building, segregation and decades of policy from both parties. Federal regulators at the EPA under a Democratic administration knew of serious concerns months before the public did and were too slow to force the issue. The honest version of the story implicates everyone who treated a poor city's warnings as noise.

What Flint changed was the national conversation about lead. Cities across the country began counting their lead service lines. The federal government put billions of dollars into replacing them through the 2021 infrastructure law, and in 2024 the EPA finalized a rule requiring most lead pipes to be replaced within ten years. Flint itself replaced its lead lines under a court settlement, a slow and imperfect process that residents had to fight to keep on track.

What you can do

The best tribute to Flint is making sure your own city cannot repeat it.

• Find out who answers for your water. Water utilities are run by local governments or regulated by the state, and federal funding flows through Congress. Start with your elected officials, which shows your representative, senators and state legislators with phone numbers and their latest votes. Ask whether your state has used its share of lead pipe money.
• Watch the rules that protect drinking water. Changes to lead, corrosion and drinking water standards go through public comment. The open comment periods are sorted with the nearest deadline first and include instructions on writing a comment that counts.
• Know your neighbours' polluters. The facility lookup shows EPA-regulated sites in your ZIP code and any violations and penalties on their record.
• Protect local self-government. State takeovers of cities and school districts are often decided in state legislatures with little attention. Follow coverage on the democracy and rule of law page and ask your state legislators how they would protect residents' voice when a city is in trouble.
• Support groups in affected cities. The nonprofit directory lists environmental, legal aid and health organizations by state, including in Michigan.

The glasses raised on April 25, 2014, were meant to celebrate savings. The bill came later, and the people of Flint paid it. Making sure the next decision about water is made by people who have to answer for it is the least the rest of the country can do.