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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#241
Grinnell
County, IA
40 F
#242
Roland
County, IA
38 F
#243
Perry
County, IA
37 F
#244
Fort Madison
County, IA
34 F
#245
Lenox
County, IA
34 F
#246
Keokuk
County, IA
32 F
#247
Janesville
County, IA
30 F
#248
Iowa City
County, IA
29 F
#249
Lamoni
County, IA
16 F
#250
Akron
County, IA
0 F
#251
Altoona
County, IA
0 F
#252
Bloomfield
County, IA
0 F
#253
Boone
County, IA
0 F
#254
Chariton
County, IA
0 F
#255
Coralville
County, IA
0 F
#256
Corning
County, IA
0 F
#257
Corydon
County, IA
0 F
#258
Cresco
County, IA
0 F
#259
Hawarden
County, IA
0 F
#260
Lemars
County, IA
0 F
#261
Leon
County, IA
0 F
#262
Manson
County, IA
0 F
#263
Mount Ayr
County, IA
0 F
#264
Nevada
County, IA
0 F

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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