City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9577
Suwannee
County, FL
55 D
#9578 Village Of Green Island
County, NY
55 D
#9579 Wesson
County, MS
55 D
#9580 Wheeling
County, WV
55 D
#9581 Williamsburg
County, IA
55 D
#9582 Alpine
County, TX
54 D
#9583 Ave Maria
County, FL
54 D
#9584 Beech Creek
County, PA
54 D
#9585 Berwyn
County, IL
54 D
#9586 Blackstone
County, VA
54 D
#9587 Boiling Springs
County, NC
54 D
#9588 Brilliant
County, OH
54 D
#9589 Carbon
County, IN
54 D
#9590 Claremore
County, OK
54 D
#9591 Clay City
County, IN
54 D
#9592 Crawfordsville
County, IN
54 D
#9593 Curwensville
County, PA
54 D
#9594 Delray Beach
County, FL
54 D
#9595 Delta
County, UT
54 D
#9596 Divernon
County, IL
54 D
#9597 Dumas
County, MS
54 D
#9598 Edcouch
County, TX
54 D
#9599 Epworth
County, IA
54 D
#9600 Farley
County, IA
54 D
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.