City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8737
Manitou Springs
County, CO
70 C
#8738 Mappsville
County, VA
70 C
#8739 Marengo
County, IN
70 C
#8740 Marked Tree
County, AR
70 C
#8741 Marshall
County, OK
70 C
#8742 Mayhew
County, MS
70 C
#8743 Mccloud
County, CA
70 C
#8744 Melcher Dallas
County, IA
70 C
#8745 Middleburg
County, PA
70 C
#8746 Milltown
County, IN
70 C
#8747 Monona
County, WI
70 C
#8748 Monroe
County, UT
70 C
#8749 Natalia
County, TX
70 C
#8750 Negaunee
County, MI
70 C
#8751 Nett Lake
County, MN
70 C
#8752 New Castle
County, VA
70 C
#8753 New Douglas
County, IL
70 C
#8754 New Harmony
County, IN
70 C
#8755 New Hebron
County, MS
70 C
#8756 New Smyrna Beach
County, FL
70 C
#8757 North Aurora
County, IL
70 C
#8758 Northborough
County, MA
70 C
#8759 Norton
County, KS
70 C
#8760 Oley
County, PA
70 C
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.