City Water Quality Rankings in Wisconsin
269 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#193
Random Lake
County, WI
84 B
#194 Superior
County, WI
84 B
#195 Waterloo
County, WI
84 B
#196 Bloomer
County, WI
83 B
#197 Green Lake
County, WI
83 B
#198 Verona
County, WI
83 B
#199 Brooklyn
County, WI
82 B
#200 Chippewa Falls
County, WI
82 B
#201 Delavan
County, WI
82 B
#202 Dousman
County, WI
82 B
#203 Ellsworth
County, WI
82 B
#204 Grand Chute
County, WI
82 B
#205 Manawa
County, WI
82 B
#206 Mazomanie
County, WI
82 B
#207 Port Washington
County, WI
82 B
#208 Somerset
County, WI
82 B
#209 Tomahawk
County, WI
82 B
#210 Combined Locks
County, WI
81 B
#211 Spooner
County, WI
81 B
#212 Altoona
County, WI
80 B
#213 Osceola
County, WI
80 B
#214 Pardeeville
County, WI
80 B
#215 Peshtigo
County, WI
80 B
#216 Westby
County, WI
80 B
Frequently Asked Questions
How are city water quality rankings calculated in Wisconsin?
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 cities in Wisconsin?
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.