City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9625
Maynard
County, MA
54 D
#9626 Napoleonville
County, LA
54 D
#9627 Newcastle
County, OK
54 D
#9628 Nicholasville
County, KY
54 D
#9629 Ninnekah
County, OK
54 D
#9630 Oregon
County, IL
54 D
#9631 Oskaloosa
County, IA
54 D
#9632 Pemberton Twp
County, NJ
54 D
#9633 Pickens
County, MS
54 D
#9634 Pine Hill
County, AL
54 D
#9635 Pingree Grove
County, IL
54 D
#9636 Pleasant Hill
County, IL
54 D
#9637 Questa
County, NM
54 D
#9638 River Oaks
County, TX
54 D
#9639 Riverside
County, IL
54 D
#9640 Rollinsford
County, NH
54 D
#9641 Romney
County, WV
54 D
#9642 Rowland
County, NC
54 D
#9643 Saddle Brook
County, NJ
54 D
#9644 Sallisaw
County, OK
54 D
#9645 San Angelo
County, TX
54 D
#9646 Sandhill
County, MS
54 D
#9647 Santa Isabel
County, PR
54 D
#9648 Schuylerville
County, NY
54 D
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.