City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2977
Montpelier
County, IN
95 A
#2978 Morton
County, WA
95 A
#2979 Mossyrock
County, WA
95 A
#2980 Mount Vernon
County, TX
95 A
#2981 Napavine
County, WA
95 A
#2982 Neillsville
County, WI
95 A
#2983 Nekoosa
County, WI
95 A
#2984 New Haven
County, IN
95 A
#2985 Newcastle
County, WY
95 A
#2986 Newfield
County, NY
95 A
#2987 Nichols
County, NY
95 A
#2988 North Myrtle Beach
County, SC
95 A
#2989 North Scituate
County, RI
95 A
#2990 Northport
County, AL
95 A
#2991 Notre Dame
County, IN
95 A
#2992 Novato
County, CA
95 A
#2993 Oberlin
County, KS
95 A
#2994 Ocilla
County, GA
95 A
#2995 Oneida
County, WI
95 A
#2996 Orange
County, CA
95 A
#2997 Ore City
County, TX
95 A
#2998 Parachute
County, CO
95 A
#2999 Pasadena
County, MD
95 A
#3000 Pataskala
County, OH
95 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.