Lead in Michigan city?s tap water declines after rising for three years

The amount of lead in Benton Harbor, Michigan's drinking water has declined, new testing shows, after three straight years of elevated results compelled residents to consume bottled water and prompted a hurried effort to replace old pipes.

Lead levels in the majority Black city's drinking water are now just within standards set by the state that if exceeded, force a utility to take corrective action and inform residents of a problem, according to state officials.

Residents have worried about the effect on their families' health, as lead can slow cognitive development and is especially dangerous for children.

Michigan officials said the new results indicate that corrosion control to prevent pipes from leaching lead into drinking water is helping. But the nearly 10,000 residents of Benton Harbor should still use bottled water for basic activities such as drinking and cooking, officials said.

"Everything is going to continue as it has previously, it's just that the data is showing us that the corrosion control is working. We need to keep at it, keep improving it and keep working at it," said Eric Oswald, director of the division that oversee drinking water at the Michigan Department of Environment, Great Lakes and Energy.

The state provides free bottled water for Benton Harbor's residents, but picking it up can be time consuming and tasks like cooking can quickly use up personal supplies. Homebound residents can ask for deliveries.

Since early 2019, residents have been offered free at-home filters designed to remove lead from the tap. In October, the state said it was reviewing the effectiveness of those filters "out of an abundance of caution" and issued guidance for residents to broadly use bottled water.