City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7345
Pembroke
County, MA
80 B
#7346 Peshtigo
County, WI
80 B
#7347 Pittsburgh
County, PA
80 B
#7348 Pittsford
County, VT
80 B
#7349 Placida
County, FL
80 B
#7350 Poolesville
County, MD
80 B
#7351 Princeton
County, MA
80 B
#7352 Punta Gorda
County, FL
80 B
#7353 Quebradillas
County, PR
80 B
#7354 Quitman
County, MS
80 B
#7355 Raleigh
County, MS
80 B
#7356 Red Oak
County, TX
80 B
#7357 Ridgeland
County, MS
80 B
#7358 Roaring Spring
County, PA
80 B
#7359 Rochester
County, IN
80 B
#7360 Ross
County, TX
80 B
#7361 Royersford
County, PA
80 B
#7362 Rusk
County, TX
80 B
#7363 Russell
County, KS
80 B
#7364 Safety Harbor
County, FL
80 B
#7365 Sahuarita
County, AZ
80 B
#7366 Salem
County, MO
80 B
#7367 Salinas
County, PR
80 B
#7368 San Antonio
County, NM
80 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.