City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5617
Vega Baja
County, PR
88 B
#5618 Ventura
County, CA
88 B
#5619 Verdi
County, NV
88 B
#5620 Villa Ridge
County, MO
88 B
#5621 Virginia Gardens
County, FL
88 B
#5622 Vonore
County, TN
88 B
#5623 Wagner
County, SD
88 B
#5624 Waite Park
County, MN
88 B
#5625 Walnut
County, IL
88 B
#5626 Walton
County, NY
88 B
#5627 Wanatah
County, IN
88 B
#5628 Wareham
County, MA
88 B
#5629 Warrensburg
County, MO
88 B
#5630 Warroad
County, MN
88 B
#5631 Wartburg
County, TN
88 B
#5632 Watsonville
County, CA
88 B
#5633 Wellington
County, TX
88 B
#5634 Wellington
County, UT
88 B
#5635 West Brookfield
County, MA
88 B
#5636 West Covina
County, CA
88 B
#5637 West Newbury
County, MA
88 B
#5638 West Unity
County, OH
88 B
#5639 Westbury
County, NY
88 B
#5640 Westford
County, MA
88 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.