City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10513
Monmouth Junction
County, NJ
40 F
#10514 Morganfield
County, KY
40 F
#10515 Oran
County, MO
40 F
#10516 Oregon
County, IL
40 F
#10517 Osawatomie
County, KS
40 F
#10518 Pine Bush
County, NY
40 F
#10519 Pittsboro
County, MS
40 F
#10520 Plainville
County, MA
40 F
#10521 Plantation
County, FL
40 F
#10522 Redwater
County, TX
40 F
#10523 Roseland
County, NJ
40 F
#10524 Salida
County, CO
40 F
#10525 Smithfield
County, UT
40 F
#10526 Tamarac
County, FL
40 F
#10527 Thompsontown
County, PA
40 F
#10528 Titusville
County, FL
40 F
#10529 Unadilla
County, NY
40 F
#10530 Union City
County, GA
40 F
#10531 Warren
County, RI
40 F
#10532 Westlake
County, LA
40 F
#10533 Cedar City
County, UT
39 F
#10534 Ceredo
County, WV
39 F
#10535 Colstrip
County, MT
39 F
#10536 Doyline
County, LA
39 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.