City Water Quality Rankings in Pennsylvania
464 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#193
Lansford
County, PA
80 B
#194 Mifflintown
County, PA
80 B
#195 Millersburg
County, PA
80 B
#196 Petrolia
County, PA
80 B
#197 Philadelphia
County, PA
80 B
#198 Roaring Spring
County, PA
80 B
#199 Slatington
County, PA
80 B
#200 Spring Mills
County, PA
80 B
#201 Westfield
County, PA
80 B
#202 Columbia
County, PA
79 B
#203 Delta
County, PA
79 B
#204 Mahanoy City
County, PA
79 B
#205 Milton
County, PA
79 B
#206 Shamokin Dam
County, PA
79 B
#207 Youngsville
County, PA
79 B
#208 Brockway
County, PA
78 B
#209 Carlisle
County, PA
78 B
#210 Dublin
County, PA
78 B
#211 Fairless Hills
County, PA
78 B
#212 Fleetwood
County, PA
78 B
#213 Mill Hall
County, PA
78 B
#214 Natrona Heights
County, PA
78 B
#215 Newmanstown
County, PA
78 B
#216 Rimersburg
County, PA
78 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.