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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#97
Woodbine
County, IA
85 B
#98
Emmetsburg
County, IA
84 B
#99
Jefferson
County, IA
84 B
#100
Mount Vernon
County, IA
84 B
#101
Sheffield
County, IA
84 B
#102
Wapello
County, IA
84 B
#103
Washington
County, IA
84 B
#104
Waterloo
County, IA
84 B
#105
Remsen
County, IA
83 B
#106
Rock Rapids
County, IA
83 B
#107
Rockwell City
County, IA
83 B
#108
Alta
County, IA
82 B
#109
Arnolds Park
County, IA
82 B
#110
Audubon
County, IA
82 B
#111
Charles City
County, IA
82 B
#112
Holstein
County, IA
82 B
#113
Ida Grove
County, IA
82 B
#114
Ireton
County, IA
82 B
#115
Letts
County, IA
82 B
#116
New Hampton
County, IA
82 B
#117
Ogden
County, IA
82 B
#118
Sanborn
County, IA
82 B
#119
Sheldon
County, IA
82 B
#120
Shell Rock
County, IA
82 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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