Pennsylvania American Water issued a boil-water advisory Sunday morning for customers in parts of Scranton due to a water main break near the intersection of North Washington Avenue and Mulberry Street.

Susan Turcmanovich, external affairs manager for Pennsylvania American Water, said in a news release that about 620 customers are being impacted.

As of around 5:30 a.m. Sunday, repairs were underway and expected to take approximately 12 hours to complete, Turcmanovich said.

The following streets are included in the advisory:

• 100-400 blocks of Mifflin Avenue

• 100-400 blocks of Franklin Avenue

• 100-500 blocks of Penn Avenue

• 500-700 blocks of Capouse Avenue

• 100-900 blocks of Wyoming Avenue

• 100-900 blocks of North Washington Avenue

• 100-900 blocks of Adams Avenue

• 100-900 blocks of Jefferson Avenue

• 100-900 blocks of Madison Avenue

• 100-900 blocks of Monroe Avenue

• 300-800 blocks of Gibson Street

• 400-800 blocks of Pine Street

• 100-800 blocks of Olive Street

• 200-800 blocks of Vine Street

• 100-800 blocks of Mulberry Street

• 100-800 blocks of Linden Street

• 100-600 blocks of Biden Street

• 100-600 blocks of Lackawanna Avenue

• 100-500 blocks of Center Street

• 500 block of Gordon Avenue

• 100 block of Anthony Street

• Unit block of Silex Street

• 600-700 blocks of Mineral Avenue

• 600 block of Barrett Court

• 300-500 blocks of New Street

• 100-700 blocks of Forest Court

• 100-500 blocks of Oakford Court

• 400 block of Kessler Court

• 700-900 blocks of Dix Court

• 800-900 blocks of Lee Court

• 500-800 blocks of Myrtle Street

• 799-900 blocks of Morris Court

• 300-900 blocks of McKenna Court

• 600 block of Ridge Row

Pennsylvania American Water experienced a loss in positive water pressure Sunday due to the water main break, which can potentially allow contamination to enter the distribution system through backflow by back-pressure or back-siphonage, Turcmanovich said.

To safely consume water during the advisory, customers should bring all water to a rolling boil, let it boil for one minute, and cool before using, or use bottled water, PAW officials said. Boiled or bottled water should be used for drinking, making ice, washing dishes, brushing teeth and food preparation until further notice, officials added.

Once service is restored, Pennsylvania American Water will collect and analyze additional water quality samples, including bacteria samples, said Turcmanovich, who noted customers will be notified when the corrective actions have been completed and they no longer need to boil their water.