Elon Musk tweeted about Flint water on Wednesday, vowing to pay to fix homes with contaminated water according to federal standards.
Musk later acknowledged in another tweet that most Flint homes have safe water and said he would organize an effort to add filters to houses that need them, according to The Associated Press.
Lead leached from old pipes after the city began using the Flint River in 2014 without adding corrosion-control chemicals. Flint returned in 2015 to Detroit's water system.
Thousands of water lines have been replaced and two years of testing has shown home water levels are below the federal action level for lead.
A spokeswoman for Flint's mayor told The Associated Press Wednesday that the city has not been contacted by Musk.
U.S. Senate candidate Sandy Pensler of Michigan is committing $500,000 toward tech billionaire Elon Musk's pledge to bring clean water to Flint homes with water-quality issues.
Pensler, a wealthy businessman running against John James in the Republican primary, said in a statement Thursday that installing high-end filtration systems at houses "can fix any remaining problems within a few days."
The state continues to provide free water filters, replacement cartridges and water-testing kits to residents.
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