Firefighting Foam Contaminates Public Water Supply for Thousands in Maine

Firefighting foam used to extinguish a fatal apartment fire entered the public water system in Waterville, Maine, contaminating the drinking water for about 9,000 people.
Officials issued a do-not-drink order and are testing water samples to determine if the water is safe to drink.
The foam is presumed to contain PFAS chemicals, which are dangerous and expensive to remove from water.
It's unclear how the foam entered the water system, but officials are investigating whether a valve in the building failed to prevent contamination.
The water district is providing updates on the situation and hopes to have test results and solutions to restore safe drinking water as quickly as possible.