The Pittsburgh Water and Sewer Authority (PWSA) has issued a precautionary flush and boil water advisory today for customers in the northern neighborhoods of the City as well as the Borough of Millvale and Reserve Township. The purpose of the advisory is to ensure that all drinking water meets regulatory standards. The health and safety of our drinking water is PWSA’s number one priority.

The temporary advisory is due to deficiencies in the cover of the Lanpher reservoir that could compromise water quality. PWSA has isolated the reservoir from the water distribution system until repairs can be completed. The Authority is coordinating with the Pennsylvania Department of Environment (DEP) to ensure that all regulatory requirements for disinfection continue to be met. PWSA will also conduct flushing throughout the impacted area to eliminate potentially compromised water.

The impacted areas are shown on the attached map (also available here: PWSA Boil Water Area). PWSA estimates the precautionary flush and boil water advisory affects approximately 18,000 homes in the PWSA service area. Impacted areas include Allegheny West.

Customers within the impacted area should do the following before using water for drinking, making ice, washing dishes, brushing teeth, and food preparation until further notice:

  1. Boil tap water vigorously for at least one minute prior to using it for drinking or cooking (the minute starts when the water begins to bubble). This includes water used for brushing teeth, making ice, washing raw foods, preparation of drinks and water for pets.
  2. Wait for the water to cool before using it, or store it in the refrigerator in a clean container.

Residents who do not know if their property has lead water pipes or solder, it is recommended to first flush your lines by running water from your tap for at least one minute before boiling. 

Flushing water brings in fresh water from the main and boiling fresh water kills any bacteria and other organisms that can enter the water. You can also use bottled water. A frequently asked questions document for boiling water can be found on the homepage.