City Water Quality Rankings in Pennsylvania
467 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#361
Birdsboro
County, PA
57 D
#362 Patton
County, PA
57 D
#363 Warminster
County, PA
56 D
#364 Charleroi
County, PA
55 D
#365 Orwigsburg
County, PA
55 D
#366 Beech Creek
County, PA
54 D
#367 Centre Hall
County, PA
54 D
#368 Curwensville
County, PA
54 D
#369 Greenville
County, PA
54 D
#370 Glasgow
County, PA
53 D
#371 Luthersburg
County, PA
53 D
#372 Aliquippa
County, PA
52 D
#373 Grampian
County, PA
52 D
#374 Mercer
County, PA
52 D
#375 Mercersburg
County, PA
52 D
#376 Orbisonia
County, PA
52 D
#377 Sunbury
County, PA
52 D
#378 Christiana
County, PA
50 D
#379 Towanda
County, PA
50 D
#380 Howard
County, PA
49 D
#381 Gettysburg
County, PA
48 D
#382 Hookstown
County, PA
48 D
#383 Tunkhannock
County, PA
48 D
#384 Braddock
County, PA
47 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.