City Water Quality Rankings in Pennsylvania
464 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#121
Pipersville
County, PA
87 B
#122 Pottstown
County, PA
87 B
#123 Schwenksville
County, PA
87 B
#124 St Thomas
County, PA
87 B
#125 Arendtsville
County, PA
86 B
#126 Biglerville
County, PA
86 B
#127 Dallastown
County, PA
86 B
#128 Franklin
County, PA
86 B
#129 Frenchville
County, PA
86 B
#130 Huntingdon
County, PA
86 B
#131 Lyon Station
County, PA
86 B
#132 Mount Joy
County, PA
86 B
#133 Myerstown
County, PA
86 B
#134 New Philadelphia
County, PA
86 B
#135 Oxford
County, PA
86 B
#136 Philipsburg
County, PA
86 B
#137 Portersville
County, PA
86 B
#138 Red Lion
County, PA
86 B
#139 Royalton
County, PA
86 B
#140 Springdale
County, PA
86 B
#141 Beach Lake
County, PA
85 B
#142 Center Valley
County, PA
85 B
#143 Doylestown
County, PA
85 B
#144 Glen Rock
County, PA
85 B
Frequently Asked Questions
How are city water quality rankings calculated in Pennsylvania?
WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.
Can I compare two cities in Pennsylvania?
Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.
How often does WaterQ refresh city data?
City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.