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 →

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#1
Asbury
County, IA
100 A
#2
Brooklyn
County, IA
100 A
#3
Coon Rapids
County, IA
100 A
#4
Dike
County, IA
100 A
#5
Durant
County, IA
100 A
#6
Eldora
County, IA
100 A
#7
Hartley
County, IA
100 A
#8
Iowa Falls
County, IA
100 A
#9
Peosta
County, IA
100 A
#10
Sumner
County, IA
100 A
#11
Winfield
County, IA
100 A
#12
Winterset
County, IA
100 A
#13
Amana
County, IA
98 A
#14
Clinton
County, IA
98 A
#15
Clive
County, IA
98 A
#16
Hull
County, IA
98 A
#17
Manchester
County, IA
98 A
#18
Onawa
County, IA
98 A
#19
Parkersburg
County, IA
98 A
#20
West Union
County, IA
98 A
#21
Davenport
County, IA
97 A
#22
Fairbank
County, IA
97 A
#23
Cedar Falls
County, IA
96 A
#24
Cherokee
County, IA
96 A

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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