City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10513
Sandy Lake
County, PA
31 F
#10514 Sparta
County, NJ
31 F
#10515 Woodsfield
County, OH
31 F
#10516 Battle Creek
County, MI
30 F
#10517 Bluff City
County, TN
30 F
#10518 Carlinville
County, IL
30 F
#10519 Carrabassett Valley
County, ME
30 F
#10520 Charenton
County, LA
30 F
#10521 Clay
County, WV
30 F
#10522 Comanche
County, OK
30 F
#10523 Cotton Valley
County, LA
30 F
#10524 Dunedin
County, FL
30 F
#10525 Gordonville
County, TX
30 F
#10526 Janesville
County, IA
30 F
#10527 Karnes City
County, TX
30 F
#10528 Kearns
County, UT
30 F
#10529 La Salle
County, IL
30 F
#10530 Lyons
County, OR
30 F
#10531 Mason
County, TX
30 F
#10532 Mount Dora
County, FL
30 F
#10533 Oviedo
County, FL
30 F
#10534 Parks
County, LA
30 F
#10535 Pell Lake
County, WI
30 F
#10536 Pittsfield
County, MA
30 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.