City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11497
Okarche
County, OK
0 F
#11498 Okay
County, OK
0 F
#11499 Okmulgee
County, OK
0 F
#11500 Oktaha
County, OK
0 F
#11501 Ola
County, AR
0 F
#11502 Ontonagon
County, MI
0 F
#11503 Orleans
County, MA
0 F
#11504 Osceola
County, IA
0 F
#11505 Overton
County, TX
0 F
#11506 Paden City
County, WV
0 F
#11507 Paducah
County, KY
0 F
#11508 Pago Pago
County, AS
0 F
#11509 Paintsville
County, KY
0 F
#11510 Palmer
County, AK
0 F
#11511 Palmetto
County, LA
0 F
#11512 Panama
County, OK
0 F
#11513 Parchman
County, MS
0 F
#11514 Parsons
County, WV
0 F
#11515 Pauma Valley
County, CA
0 F
#11516 Pawling
County, NY
0 F
#11517 Pawnee
County, OK
0 F
#11518 Peach Springs
County, AZ
0 F
#11519 Pelham
County, GA
0 F
#11520 Pella
County, IA
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.