(LANSING) — 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 Gov. Rick Snyder and a team of water experts will unveil Friday in the wake of Flint’s water crisis. 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, according to a document provided to The Associated Press by the governor’s office before the announcement. Under U.S.