WaterQ

City Water Quality Rankings in Iowa

268 cities ranked by drinking water quality.

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Popular city water quality comparisons

Asbury, IA vs Brooklyn, IA Compare → Coon Rapids, IA vs Dike, IA Compare → Durant, IA vs Eldora, IA Compare → Hartley, IA vs Iowa Falls, IA Compare →

Trending Cities

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#121
Sioux Center
County, IA
82 B
#122
Belle Plaine
County, IA
81 B
#123
Creston
County, IA
81 B
#124
Dubuque
County, IA
81 B
#125
Ottumwa
County, IA
81 B
#126
Walcott
County, IA
81 B
#127
Bondurant
County, IA
80 B
#128
Hiawatha
County, IA
80 B
#129
Jesup
County, IA
80 B
#130
Kingsley
County, IA
80 B
#131
Sibley
County, IA
80 B
#132
Spirit Lake
County, IA
80 B
#133
St. Ansgar
County, IA
80 B
#134
Vinton
County, IA
80 B
#135
West Liberty
County, IA
80 B
#136
Centerville
County, IA
79 B
#137
Rock Valley
County, IA
79 B
#138
Conrad
County, IA
78 B
#139
Council Bluffs
County, IA
78 B
#140
Knoxville
County, IA
78 B
#141
Laurens
County, IA
78 B
#142
Moville
County, IA
78 B
#143
Orange City
County, IA
78 B
#144
Pocahontas
County, IA
78 B

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.

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