WaterQ

City Water Quality Rankings in Iowa

270 cities ranked by drinking water quality.

All States AL AK AZ AR CA CO CT DE FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY

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

Fairbanks, AK Fresno, CA San Jose, CA Sacramento, CA San Francisco, CA Houston, TX Fargo, ND
#169
Fort Dodge
County, IA
74 C
#170
Guttenberg
County, IA
74 C
#171
Logan
County, IA
74 C
#172
Sloan
County, IA
74 C
#173
State Center
County, IA
74 C
#174
Tiffin
County, IA
74 C
#175
Van Meter
County, IA
74 C
#176
Britt
County, IA
73 C
#177
Alton
County, IA
72 C
#178
Clarion
County, IA
72 C
#179
Laporte City
County, IA
72 C
#180
Lisbon
County, IA
72 C
#181
North Liberty
County, IA
72 C
#182
Sigourney
County, IA
72 C
#183
Madrid
County, IA
71 C
#184
Mechanicsville
County, IA
71 C
#185
Central City
County, IA
70 C
#186
Earlham
County, IA
70 C
#187
Hospers
County, IA
70 C
#188
Jewell
County, IA
70 C
#189
Melcher Dallas
County, IA
70 C
#190
Osage
County, IA
70 C
#191
Riverside
County, IA
70 C
#192
Sergeant Bluff
County, IA
70 C

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.

Explore More Water Quality Data

State Rankings National Rankings Compare Cities All Water Systems