City Water Quality Rankings in Pennsylvania
464 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#409
Mount Union
County, PA
28 F
#410 New Paris
County, PA
28 F
#411 Mingoville
County, PA
26 F
#412 Blairsville
County, PA
25 F
#413 Braddock
County, PA
25 F
#414 Matamoras
County, PA
25 F
#415 Galeton
County, PA
24 F
#416 Lords Valley
County, PA
24 F
#417 Smethport
County, PA
23 F
#418 Weatherly
County, PA
23 F
#419 Union City
County, PA
22 F
#420 Johnstown
County, PA
19 F
#421 Mansfield
County, PA
18 F
#422 Greentown
County, PA
17 F
#423 Blossburg
County, PA
14 F
#424 Roulette
County, PA
12 F
#425 Hookstown
County, PA
10 F
#426 Renovo
County, PA
10 F
#427 Morrisville
County, PA
8 F
#428 Saxton
County, PA
8 F
#429 Colver
County, PA
7 F
#430 Bentleyville
County, PA
5 F
#431 Hawthorn
County, PA
2 F
#432 Altoona
County, PA
1 F
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.