City Water Quality Rankings in Iowa
270 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#145
Hudson
County, IA
78 B
#146 Knoxville
County, IA
78 B
#147 Laurens
County, IA
78 B
#148 Milford
County, IA
78 B
#149 Moville
County, IA
78 B
#150 Orange City
County, IA
78 B
#151 Pocahontas
County, IA
78 B
#152 Sioux Center
County, IA
78 B
#153 Waukon
County, IA
78 B
#154 Manning
County, IA
77 B
#155 Missouri Valley
County, IA
77 B
#156 Montezuma
County, IA
77 B
#157 Denver
County, IA
76 B
#158 Des Moines
County, IA
76 B
#159 Huxley
County, IA
76 B
#160 Mason City
County, IA
76 B
#161 North English
County, IA
76 B
#162 Polk City
County, IA
76 B
#163 Villisca
County, IA
76 B
#164 West Des Moines
County, IA
76 B
#165 Manly
County, IA
75 B
#166 Albia
County, IA
74 C
#167 Baxter
County, IA
74 C
#168 Evansdale
County, IA
74 C
Frequently Asked Questions
How are city water quality rankings calculated in Iowa?
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 Iowa?
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.