City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#6025
Mount Olive
County, NC
86 B
#6026 Moureauville
County, LA
86 B
#6027 Myersville
County, MD
86 B
#6028 Nahant
County, MA
86 B
#6029 Navarre
County, FL
86 B
#6030 New Bern
County, NC
86 B
#6031 New London
County, NH
86 B
#6032 New Philadelphia
County, PA
86 B
#6033 New Richmond
County, WI
86 B
#6034 Newport
County, MN
86 B
#6035 Norfolk
County, NY
86 B
#6036 North Branch
County, MN
86 B
#6037 North Creek
County, NY
86 B
#6038 Noxapater
County, MS
86 B
#6039 Numine
County, PA
86 B
#6040 Obetz
County, OH
86 B
#6041 Obion
County, TN
86 B
#6042 Ocean City
County, MD
86 B
#6043 Odessa
County, TX
86 B
#6044 Old Bridge
County, NJ
86 B
#6045 Oregon
County, MO
86 B
#6046 Orfordville
County, WI
86 B
#6047 Orocovis
County, PR
86 B
#6048 Osakis
County, MN
86 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.