City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9961
Lansing
County, IL
47 D
#9962 Maquoketa
County, IA
47 D
#9963 Napoleon
County, OH
47 D
#9964 New Llano
County, LA
47 D
#9965 Ralls
County, TX
47 D
#9966 Richford
County, VT
47 D
#9967 San Jacinto
County, CA
47 D
#9968 San Tan Valley
County, AZ
47 D
#9969 Shawnee
County, OK
47 D
#9970 Sparta
County, IL
47 D
#9971 Springfield
County, MI
47 D
#9972 Steamboat Springs
County, CO
47 D
#9973 Sugar Grove
County, IL
47 D
#9974 Sweet Springs
County, MO
47 D
#9975 Tahlequah
County, OK
47 D
#9976 Valmeyer
County, IL
47 D
#9977 Walters
County, OK
47 D
#9978 Wesley Chapel
County, FL
47 D
#9979 Worth
County, MO
47 D
#9980 Albany
County, LA
46 D
#9981 Amherst
County, MA
46 D
#9982 Ashford
County, WA
46 D
#9983 Bandera
County, TX
46 D
#9984 Benton Harbor
County, MI
46 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.