City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11377
Petersburg
County, AK
0 F
#11378 Pewaukee
County, WI
0 F
#11379 Philipsburg
County, MT
0 F
#11380 Phoenix
County, IL
0 F
#11381 Phoenix
County, MD
0 F
#11382 Piedmont
County, OK
0 F
#11383 Pineville
County, KY
0 F
#11384 Plains
County, TX
0 F
#11385 Plainview
County, NE
0 F
#11386 Pocola
County, OK
0 F
#11387 Pointblank
County, TX
0 F
#11388 Polacca
County, AZ
0 F
#11389 Polk
County, PA
0 F
#11390 Pomerene
County, AZ
0 F
#11391 Port Lavaca
County, TX
0 F
#11392 Portage
County, PA
0 F
#11393 Porter
County, OK
0 F
#11394 Porum
County, OK
0 F
#11395 Poseyville
County, IN
0 F
#11396 Poteau
County, OK
0 F
#11397 Prague
County, OK
0 F
#11398 Prairie Hill
County, TX
0 F
#11399 Pratt
County, KS
0 F
#11400 Prescott Valley
County, AZ
0 F
Frequently Asked Questions
How are city water quality rankings calculated?
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 US cities directly?
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.