Johnstown

Johnstown, PA receives a water quality score of 19/100 (Grade F) based on EPA Safe Drinking Water Information System (SDWIS) compliance data for 5 public water systems serving the area.

Johnstown's water quality score is below the national average, indicating a history of EPA violations or elevated contaminant levels. Residents are encouraged to check their specific water system report and consider additional filtration.

Johnstown's score of 19 is 52 points below the Pennsylvania state average of 71, and below the nationwide average of roughly 78/100 across all U.S. states.

For homebuyers considering a move to this mid-size Pennsylvania city situated in the Appalachian foothills of the Mid-Atlantic, the local tap water quality presents significant challenges. The older industrial infrastructure common to this region heavily impacts the output of Johnstown's water systems, resulting in a failing assessment that should prompt residents to exercise caution. New or prospective residents will likely need to rely on household filtration methods or alternative water supplies for their daily drinking needs.

Water quality data is sourced from the U.S. EPA SDWIS database and updated quarterly. Learn about our scoring methodology → Read our Pennsylvania water quality rankings report →