Michigan Adopts Strictest Lead Water Rules in the United States
rules to guard against lead in drinking water. Officials said the move is prompted by the Flint water crisis that exposed thousands of city residents to high levels of the toxic chemical. The maximum level of allowable lead in drinking water will drop to 12 parts per billion in 2025 under the new standards set by the Michigan Department of Environmental Quality. The federal level as mandated by the EPA is 15 parts per billion. All public water systems must replace the state’s 500,000 lead service lines at a rate averaging 5 percent per year beginning in 2021 over a 20-year period..