President Obama signed a $10 billion water infrastructure bill Friday that provides $170 million to the city of Flint, Mich., and other communities suffering from lead-contaminated drinking water.

“That help for Flint is a priority of this administration,” President Obama said. Flint became a political lightning rod during the presidential campaigns that drew attention to the growing problems faced by communities where manufacturing jobs have declined, and with them the tax base to sustain basic infrastructure needs.