City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8617
Quitman
County, LA
68 C
#8618 Raton
County, NM
68 C
#8619 Richmond
County, RI
68 C
#8620 Ridgefield
County, CT
68 C
#8621 Rison
County, AR
68 C
#8622 Rockford
County, OH
68 C
#8623 Rockville
County, IN
68 C
#8624 Romeoville
County, IL
68 C
#8625 Salisbury
County, MA
68 C
#8626 Sedan
County, KS
68 C
#8627 Shallowater
County, TX
68 C
#8628 Shirley
County, MA
68 C
#8629 Sioux City
County, IA
68 C
#8630 Slocomb
County, AL
68 C
#8631 South Glens Falls
County, NY
68 C
#8632 Star Lake
County, NY
68 C
#8633 Tipton
County, IA
68 C
#8634 Tompkinville, Ky
County, KY
68 C
#8635 Troutman
County, NC
68 C
#8636 Vista
County, CA
68 C
#8637 Walworth
County, NY
68 C
#8638 Watersmeet
County, MI
68 C
#8639 Waukee
County, IA
68 C
#8640 Waveland
County, MS
68 C
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.