Jackson, Mississippi, a city of 150,000, is in the sixth week of a boil-water advisory from the state health department because of concerns that low pressure could allow contaminants into the water.

‘There are some amazing success stories,’ said Stanford University environmental scientist Rob Jackson.

Gov. Gretchen Whitmer said she would sign the bill, which allocates $1.7 billion toward clean water projects in the state.

States and cities have worked for years to replace pipes and service lines, but efforts have lagged in many places in part because of the steep price tag.