City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7633
Hollister
County, MO
78 B
#7634 Hollywood
County, FL
78 B
#7635 Hudson
County, IA
78 B
#7636 Hurlburt Field
County, FL
78 B
#7637 Immokalee
County, FL
78 B
#7638 Jacksonville
County, TX
78 B
#7639 Jeanerette
County, LA
78 B
#7640 Jennings
County, LA
78 B
#7641 Jonesborough
County, TN
78 B
#7642 Juana Diaz
County, PR
78 B
#7643 Kewaunee
County, WI
78 B
#7644 Kingsley
County, MI
78 B
#7645 Knoxville
County, IA
78 B
#7646 Lafayette
County, OR
78 B
#7647 Laurens
County, IA
78 B
#7648 Lees Summit
County, MO
78 B
#7649 Leesburg
County, GA
78 B
#7650 Leesport
County, PA
78 B
#7651 Lenoir
County, NC
78 B
#7652 Madisonville
County, TN
78 B
#7653 Manheim
County, PA
78 B
#7654 Manteo
County, NC
78 B
#7655 Maple Shade
County, NJ
78 B
#7656 Matagorda
County, TX
78 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.