WaterQ

City Water Quality Rankings in Iowa

270 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
Palo
County, IA
82 B
#122
Sanborn
County, IA
82 B
#123
Sheldon
County, IA
82 B
#124
Shell Rock
County, IA
82 B
#125
Slater
County, IA
82 B
#126
Traer
County, IA
82 B
#127
Creston
County, IA
81 B
#128
Dubuque
County, IA
81 B
#129
Ottumwa
County, IA
81 B
#130
Walcott
County, IA
81 B
#131
Bondurant
County, IA
80 B
#132
Hiawatha
County, IA
80 B
#133
Jesup
County, IA
80 B
#134
Kingsley
County, IA
80 B
#135
Sibley
County, IA
80 B
#136
Spirit Lake
County, IA
80 B
#137
St. Ansgar
County, IA
80 B
#138
Vinton
County, IA
80 B
#139
West Liberty
County, IA
80 B
#140
Centerville
County, IA
79 B
#141
Rock Valley
County, IA
79 B
#142
Clarinda
County, IA
78 B
#143
Conrad
County, IA
78 B
#144
Council Bluffs
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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