City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7825
Liberty
County, MS
77 B
#7826 Malden
County, MA
77 B
#7827 Manning
County, IA
77 B
#7828 Maple
County, NC
77 B
#7829 Marine
County, IL
77 B
#7830 Marion
County, KS
77 B
#7831 Masontown
County, WV
77 B
#7832 Merriam Woods
County, MO
77 B
#7833 Metropolis
County, IL
77 B
#7834 Metter
County, GA
77 B
#7835 Middleton
County, MA
77 B
#7836 Milton
County, IN
77 B
#7837 Mineral Point
County, WI
77 B
#7838 Missouri Valley
County, IA
77 B
#7839 Montezuma
County, IA
77 B
#7840 Mount Sterling
County, OH
77 B
#7841 Nixa
County, MO
77 B
#7842 Northbrook
County, IL
77 B
#7843 Oklahoma City
County, OK
77 B
#7844 Plantersville
County, MS
77 B
#7845 Quanah
County, TX
77 B
#7846 River Forest
County, IL
77 B
#7847 Roby
County, MO
77 B
#7848 Rogersville
County, TN
77 B
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.