City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8497
Jasper
County, TX
72 C
#8498 Jay
County, VT
72 C
#8499 Jonesville
County, SC
72 C
#8500 Kilbourne
County, LA
72 C
#8501 Lagrange
County, OH
72 C
#8502 Lake Forest
County, IL
72 C
#8503 Lake Hamilton
County, FL
72 C
#8504 Lancaster
County, NH
72 C
#8505 Lapeer
County, MI
72 C
#8506 Laporte City
County, IA
72 C
#8507 Lexington
County, TN
72 C
#8508 Lisbon
County, IA
72 C
#8509 Lockport
County, IL
72 C
#8510 Log Cabin
County, TX
72 C
#8511 Luke Afb
County, AZ
72 C
#8512 Marco Island
County, FL
72 C
#8513 Mayodan
County, NC
72 C
#8514 Mcadoo
County, PA
72 C
#8515 Mcclure
County, OH
72 C
#8516 Middleport
County, OH
72 C
#8517 Midway
County, GA
72 C
#8518 Milford
County, KS
72 C
#8519 Millerville
County, AL
72 C
#8520 Mills
County, WY
72 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.