Choose a country: United States
Iowa Water Quality
Iowa ranks #18 out of 49 states for tap water quality with a score of 87.3 out of 100.
Based on 361 scored cities covering 80.4% of the state's served population.
Summary
Cities Needing Improvement
Cities listed carry the most serious water quality verdicts in Iowa, worst first, then the lowest scores. A city rated Safe is never listed.
Get Iowa Water Updates
We analyze new EPA data as it drops. Get the breakdown for Iowa in your inbox.
Free forever. Unsubscribe anytime. We never share your email.
Frequently Asked Questions About Iowa Water Quality
Iowa ranks #18 out of 49 states and territories for water quality with a score of 87.3 out of 100 and a grade of A. A total of 361 cities were tested across the state.
Curious how your own water compares to Iowa's ranking?
Upload your water test (PDF or a photo) and we'll email you a plain-English reading of each result — free. Educational only, no medical claims.
Your upload also helps us keep local water data accurate — we only ever share anonymized, area-level summaries.
Upload my testCheck Your City's Water Quality
See detailed water quality data and get personalized filter recommendations for your specific location.
Get the Weekly Water Brief
One email a week on water testing, treatment, and what water-quality data means for your home.
One email a week. Unsubscribe anytime.