Boil Water Advisory Lifted For Nearly 100K In Pittsburgh Area

PITTSBURGH, PA —A boil water advisory that had been in effect since Saturday for nearly 100,000 Pennsylvania American Water customers in Allegheny and Washington counties has been lifted.

The advisory was rescinded after a second set of water samples were tested and showed no sign of bacterial contamination.

In routine monitoring of its water distribution system, early Saturday morning, a power surge caused a depletion of water storage at a tank near the Aldrich Water Treatment Plant in Elrama, Washington County, resulting in the loss of positive pressure within the distribution system, the utility said.

"A loss of positive water pressure is a signal of the existence of conditions that could allow contamination to enter the distribution system through backflow by back pressure or back siphonage," the utility stated then.

The advisory impacted the following communities:

Allegheny County

Bethel Park

Bridgeville

Clairton

Dravosburg

Elizabeth Township

Elizabeth Borough

Glassport

Jefferson Hills Borough

Liberty

Lincoln

North Fayette

South Fayette

South Park

Upper Saint Clair

West Elizabeth

WASHINGTON COUNTY

Amwell

Buffalo

Canonsburg

Canton

Caroll Township

Cecil Township

Chartiers

City of Washington

Claysville

Cross Creek

Donegal Township

East Washington

​Fallowfield

Finleyville

Forward Township

Green Hills Borough

​Houston

Jefferson

Monongahela

Mount Pleasant

New Eagle

North Franklin

North Strabane

Nottingham

Peters Township

Somerset Township

South Franklin

South Strabane

Union Township

West Middletown