City Water Quality Rankings in Pennsylvania
464 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#337
East Greenville
County, PA
61 C
#338 Mount Morris
County, PA
61 C
#339 Pennsylvania Furnace
County, PA
61 C
#340 Pine Grove
County, PA
60 C
#341 Reynoldsville
County, PA
60 C
#342 Loysburg
County, PA
59 D
#343 Christiana
County, PA
58 D
#344 Latrobe
County, PA
58 D
#345 Rockwood
County, PA
58 D
#346 Buckingham
County, PA
57 D
#347 Luthersburg
County, PA
56 D
#348 Charleroi
County, PA
55 D
#349 Patton
County, PA
55 D
#350 Beech Creek
County, PA
54 D
#351 Curwensville
County, PA
54 D
#352 Warminster
County, PA
54 D
#353 Dubois
County, PA
53 D
#354 Southampton
County, PA
53 D
#355 Waterford
County, PA
53 D
#356 East Brady
County, PA
52 D
#357 Grampian
County, PA
52 D
#358 Harwick
County, PA
52 D
#359 Mercer
County, PA
52 D
#360 Orbisonia
County, PA
52 D
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.