City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2617
Newport
County, ME
96 A
#2618 Newport
County, NH
96 A
#2619 Newport
County, TN
96 A
#2620 Newport News
County, VA
96 A
#2621 Newton
County, MA
96 A
#2622 Newton Falls
County, OH
96 A
#2623 Niagara
County, WI
96 A
#2624 Nicholson
County, PA
96 A
#2625 Nixon
County, TX
96 A
#2626 North Conway
County, NH
96 A
#2627 North Plymouth
County, MA
96 A
#2628 North Sioux City
County, SD
96 A
#2629 North St. Paul
County, MN
96 A
#2630 North Tazewell
County, VA
96 A
#2631 Oak Harbor
County, WA
96 A
#2632 Oak Park
County, MI
96 A
#2633 Oak Park Heights
County, MN
96 A
#2634 Oakland
County, CA
96 A
#2635 Oakwood
County, OH
96 A
#2636 Ocean Park
County, WA
96 A
#2637 Odell
County, IL
96 A
#2638 Odell
County, OR
96 A
#2639 Omega
County, GA
96 A
#2640 Omro
County, WI
96 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.