City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11545
Poseyville
County, IN
0 F
#11546 Poteau
County, OK
0 F
#11547 Prague
County, OK
0 F
#11548 Prairie Hill
County, TX
0 F
#11549 Pratt
County, KS
0 F
#11550 Prescott Valley
County, AZ
0 F
#11551 Preston
County, OK
0 F
#11552 Prestonsburg
County, KY
0 F
#11553 Prichard
County, AL
0 F
#11554 Procious
County, WV
0 F
#11555 Providence
County, KY
0 F
#11556 Prudence Island
County, RI
0 F
#11557 Pt. Pleasant
County, WV
0 F
#11558 Quinton
County, OK
0 F
#11559 Radcliff
County, KY
0 F
#11560 Rainelle
County, WV
0 F
#11561 Randolph
County, WI
0 F
#11562 Ratliff City
County, OK
0 F
#11563 Rayville
County, LA
0 F
#11564 Red Boiling Springs
County, TN
0 F
#11565 Red Lake
County, MN
0 F
#11566 Red Oak
County, IA
0 F
#11567 Redvale
County, CO
0 F
#11568 Reynolds
County, GA
0 F
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.