City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9601
Fitchburg
County, MA
54 D
#9602 Forest Park
County, IL
54 D
#9603 Fort Branch
County, IN
54 D
#9604 Garner
County, IA
54 D
#9605 Glen Gardner
County, NJ
54 D
#9606 Grafton
County, WV
54 D
#9607 Gregory
County, TX
54 D
#9608 Hackettstown
County, NJ
54 D
#9609 Hereford
County, TX
54 D
#9610 Herscher
County, IL
54 D
#9611 Hohokus Boro
County, NJ
54 D
#9612 Holbrook
County, AZ
54 D
#9613 Italy
County, TX
54 D
#9614 Jasonville
County, IN
54 D
#9615 Jensen Beach
County, FL
54 D
#9616 Kingstree
County, SC
54 D
#9617 Kirbyville
County, TX
54 D
#9618 Kissimmee
County, FL
54 D
#9619 Lady Lake
County, FL
54 D
#9620 Leominster
County, MA
54 D
#9621 Linville
County, NC
54 D
#9622 Longboat Key
County, FL
54 D
#9623 Many Farms
County, AZ
54 D
#9624 Margate
County, FL
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.