City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5497
Morrisonville
County, IL
88 B
#5498 Morrow
County, OH
88 B
#5499 Morton
County, IL
88 B
#5500 Mount Hermon
County, CA
88 B
#5501 Mount Zion
County, GA
88 B
#5502 Muskego
County, WI
88 B
#5503 Napa
County, CA
88 B
#5504 New Berlin
County, NY
88 B
#5505 New Edinburgh
County, AR
88 B
#5506 New Milford
County, PA
88 B
#5507 New Port
County, AR
88 B
#5508 Newman
County, CA
88 B
#5509 Newport
County, NC
88 B
#5510 Newville
County, PA
88 B
#5511 Niota
County, TN
88 B
#5512 Norman Park
County, GA
88 B
#5513 Norridgewock
County, ME
88 B
#5514 North Bay Village
County, FL
88 B
#5515 North Branch
County, MI
88 B
#5516 North Port
County, FL
88 B
#5517 Oakfield
County, WI
88 B
#5518 Oakland
County, IA
88 B
#5519 Olivet
County, MI
88 B
#5520 Onaga
County, KS
88 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.