City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9121
Key West
County, FL
66 C
#9122 Knoxville
County, IL
66 C
#9123 Lake Buena Vista
County, FL
66 C
#9124 Lake Zurich
County, IL
66 C
#9125 Lebec
County, CA
66 C
#9126 Lemitar
County, NM
66 C
#9127 Lenox
County, MA
66 C
#9128 Lewisport
County, KY
66 C
#9129 Lincoln
County, ND
66 C
#9130 Lincolnton
County, GA
66 C
#9131 Lovelock
County, NV
66 C
#9132 Malvern
County, OH
66 C
#9133 Mapleton
County, IA
66 C
#9134 Maysville
County, NC
66 C
#9135 Mcleansboro
County, IL
66 C
#9136 Mead
County, OK
66 C
#9137 Meriden
County, CT
66 C
#9138 Merrick
County, NY
66 C
#9139 Merrionette Park
County, IL
66 C
#9140 Mexia
County, TX
66 C
#9141 Miami Garden
County, FL
66 C
#9142 Mona
County, UT
66 C
#9143 Montoursville
County, PA
66 C
#9144 Mooreland
County, OK
66 C
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.