City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7753
Weatherford
County, OK
78 B
#7754 West Bridgewater
County, MA
78 B
#7755 West Grove
County, PA
78 B
#7756 West Harrison
County, IN
78 B
#7757 West Nyack
County, NY
78 B
#7758 Westchester
County, IL
78 B
#7759 Westminster
County, MA
78 B
#7760 Whitehall
County, PA
78 B
#7761 Whitehall
County, WI
78 B
#7762 Whitehouse Station
County, NJ
78 B
#7763 Whiteman Afb
County, MO
78 B
#7764 Wilbraham
County, MA
78 B
#7765 Williamstown
County, MA
78 B
#7766 Windsor
County, PA
78 B
#7767 Woodway
County, TX
78 B
#7768 Wrightsville
County, PA
78 B
#7769 Zephyr Cove
County, NV
78 B
#7770 Zimmerman
County, MN
78 B
#7771 Abbotsford
County, WI
77 B
#7772 Albers
County, IL
77 B
#7773 Alburtis
County, PA
77 B
#7774 Arlington
County, WA
77 B
#7775 Baldwin
County, GA
77 B
#7776 Baltic
County, SD
77 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.