City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9745
Agra
County, OK
51 D
#9746 Alva
County, OK
51 D
#9747 Black Mountain
County, NC
51 D
#9748 Clearwater
County, KS
51 D
#9749 Deming
County, NM
51 D
#9750 Dieterich
County, IL
51 D
#9751 Drew
County, MS
51 D
#9752 Flomaton
County, AL
51 D
#9753 Fort Yates
County, ND
51 D
#9754 Garland
County, UT
51 D
#9755 Grabill
County, IN
51 D
#9756 Green Bay
County, WI
51 D
#9757 Hogansville
County, GA
51 D
#9758 Holly Hill
County, FL
51 D
#9759 Lawtey
County, FL
51 D
#9760 Louisa
County, VA
51 D
#9761 Mangum
County, OK
51 D
#9762 Marble Falls
County, TX
51 D
#9763 Matagorda
County, TX
51 D
#9764 Maybrook
County, NY
51 D
#9765 Mayo
County, FL
51 D
#9766 Mcincr, Mcb Quantico
County, VA
51 D
#9767 Mcneill
County, MS
51 D
#9768 Murphysboro
County, IL
51 D
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.