City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8257
Mendenhall
County, MS
74 C
#8258 Mercer
County, MO
74 C
#8259 Meredosia
County, IL
74 C
#8260 Minooka
County, IL
74 C
#8261 Monetta
County, SC
74 C
#8262 Monroeville
County, PA
74 C
#8263 Moore Haven
County, FL
74 C
#8264 Morgantown
County, KY
74 C
#8265 Mount Kisco
County, NY
74 C
#8266 Mt Enterprise
County, TX
74 C
#8267 Mt. Shasta
County, CA
74 C
#8268 Murphys
County, CA
74 C
#8269 Nicholson
County, GA
74 C
#8270 Noank
County, CT
74 C
#8271 Norwell
County, MA
74 C
#8272 Oakwood
County, TX
74 C
#8273 Ocean Isle Beach
County, NC
74 C
#8274 Old Fort
County, NC
74 C
#8275 Oswego
County, KS
74 C
#8276 Owasso
County, OK
74 C
#8277 Pagosa Springs
County, CO
74 C
#8278 Palm Coast
County, FL
74 C
#8279 Paradise
County, UT
74 C
#8280 Pennington Gap
County, VA
74 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.