Michigan would have the toughest lead-testing rules in the nation and require the replacement of all underground lead service pipes in the state under a sweeping plan that Gov. Rick Snyder and a team of water experts unveiled April 15 in the wake of Flint's water crisis.
Under U.S. Environmental Protection Agency rules, water systems across the country must take steps to control corrosion if lead concentrations exceed 15 parts per billion in more than 10 percent of customer taps sampled. Michigan would move by 2020 to a limit of 10 parts per billion – in line with the World Health Organization's standard.
Other proposals include requiring utilities to test all schools, day care centers, nursing homes and similar facilities not just some people's houses and the mandatory disclosure of lead plumbing in home sales and rental contracts.
More details here.