City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9121
Minden
County, NV
62 C
#9122 Monette
County, AR
62 C
#9123 Monona
County, IA
62 C
#9124 Monongah
County, WV
62 C
#9125 Morgans Point Resort
County, TX
62 C
#9126 Morrisdale
County, PA
62 C
#9127 Mt Clemens
County, MI
62 C
#9128 Nederland
County, CO
62 C
#9129 Needham
County, MA
62 C
#9130 New Lenox
County, IL
62 C
#9131 Newport
County, PA
62 C
#9132 Newton
County, NC
62 C
#9133 Normal
County, IL
62 C
#9134 Northeast Harbor
County, ME
62 C
#9135 Oakdale
County, PA
62 C
#9136 Oklahoma City
County, OK
62 C
#9137 Opelousas
County, LA
62 C
#9138 Palm Springs
County, FL
62 C
#9139 Paulding
County, MS
62 C
#9140 Pennsboro
County, WV
62 C
#9141 Peoria
County, IL
62 C
#9142 Poplarville
County, MS
62 C
#9143 Rio Grande
County, TX
62 C
#9144 Rio Hondo
County, TX
62 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.