City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2089
Mishawaka
County, IN
97 A
#2090 Morgan
County, GA
97 A
#2091 Mount Vernon
County, OH
97 A
#2092 N Ft Myers
County, FL
97 A
#2093 Nashua
County, NH
97 A
#2094 Nehalem
County, OR
97 A
#2095 New Britain
County, CT
97 A
#2096 New Brockton
County, AL
97 A
#2097 New Buffalo
County, MI
97 A
#2098 New Carlisle
County, OH
97 A
#2099 North Waterboro
County, ME
97 A
#2100 Oak Harber
County, OH
97 A
#2101 Oakfield
County, NY
97 A
#2102 Oakland
County, NE
97 A
#2103 Oakman
County, AL
97 A
#2104 Oneonta
County, NY
97 A
#2105 Orangeburg
County, SC
97 A
#2106 Orchard Park
County, NY
97 A
#2107 Osage Beach
County, MO
97 A
#2108 Pacific Grove
County, CA
97 A
#2109 Painesville
County, OH
97 A
#2110 Pasadena
County, CA
97 A
#2111 Philadelphia
County, NY
97 A
#2112 Plattsburgh
County, NY
97 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.