City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9313
Monticello
County, MS
64 C
#9314 Morgans Point Resort
County, TX
64 C
#9315 Naples
County, FL
64 C
#9316 Nebo
County, KY
64 C
#9317 New Iberia
County, LA
64 C
#9318 Newburgh
County, NY
64 C
#9319 Oak Bluffs
County, MA
64 C
#9320 Ogden Dunes
County, IN
64 C
#9321 Onarga
County, IL
64 C
#9322 Palacios
County, TX
64 C
#9323 Palestine
County, WV
64 C
#9324 Pattison
County, MS
64 C
#9325 Pelahatchie
County, MS
64 C
#9326 Peoria
County, IL
64 C
#9327 Reeds Spring
County, MO
64 C
#9328 Rio
County, WI
64 C
#9329 Rushville
County, NY
64 C
#9330 San Sebastian
County, PR
64 C
#9331 Seneca
County, IL
64 C
#9332 Sierra Blanca
County, TX
64 C
#9333 Somerset
County, OH
64 C
#9334 Southampton
County, PA
64 C
#9335 Southbridge
County, MA
64 C
#9336 Spencer
County, OK
64 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.