City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#625
New Castle
County, KY
100 A
#626 New Hyde Park
County, NY
100 A
#627 New Site
County, AL
100 A
#628 Newaygo
County, MI
100 A
#629 Newburgh
County, IN
100 A
#630 Newcastle
County, WA
100 A
#631 Newfane
County, NY
100 A
#632 Newman Lake
County, WA
100 A
#633 Newport
County, AR
100 A
#634 Newport
County, MI
100 A
#635 Newton
County, IL
100 A
#636 Newton
County, KS
100 A
#637 Niagara Falls
County, NY
100 A
#638 Nice
County, CA
100 A
#639 Nicollet
County, MN
100 A
#640 Ninety Six
County, SC
100 A
#641 Nipomo
County, CA
100 A
#642 Nooksack
County, WA
100 A
#643 Norphlet
County, AR
100 A
#644 Norris
County, SC
100 A
#645 North Bend
County, NE
100 A
#646 North Bonneville
County, WA
100 A
#647 North Hero
County, VT
100 A
#648 North Las Vegas
County, NV
100 A
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.