City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5521
Oregon
County, WI
88 B
#5522 Ortonville
County, MN
88 B
#5523 Othello
County, WA
88 B
#5524 Ovilla
County, TX
88 B
#5525 Pahoa
County, HI
88 B
#5526 Palmyra
County, MO
88 B
#5527 Park Falls
County, WI
88 B
#5528 Pasadena
County, TX
88 B
#5529 Paulsboro
County, NJ
88 B
#5530 Pawleys Island
County, SC
88 B
#5531 Penn Yan
County, NY
88 B
#5532 Penrose
County, CO
88 B
#5533 Phoenix
County, NY
88 B
#5534 Piggott
County, AR
88 B
#5535 Plains
County, MT
88 B
#5536 Planada
County, CA
88 B
#5537 Pocasset
County, MA
88 B
#5538 Point Roberts
County, WA
88 B
#5539 Poland
County, ME
88 B
#5540 Port Hueneme
County, CA
88 B
#5541 Portland
County, MI
88 B
#5542 Premont
County, TX
88 B
#5543 Princeton
County, NJ
88 B
#5544 Prospect
County, TN
88 B
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.