Iowa City, Iowa Water Quality Report
Water quality data for 17 water systems serving 97,316 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 72.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 720% | Above guideline |
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Compliance & Violations
Active Violations (4)
34
Aug 5, 2025
34
Aug 5, 2025
71
Jul 1, 2024
71
Jul 1, 2023
Resolved Violations (496)
3A
Sep 1, 2025 — Sep 30, 2025
02
Jul 1, 2025 — Sep 30, 2025
02
Jul 1, 2025 — Sep 30, 2025
02
Jul 1, 2025 — Sep 30, 2025
02
Apr 1, 2025 — Jun 30, 2025
+ 491 more resolved violations
Frequently Asked Questions
Is Iowa City tap water safe to drink?
Iowa City's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Iowa City tap water?
1 contaminants have been detected in Iowa City's water supply across 17 water systems. See the full contaminant table above for details.
How can I improve my water quality in Iowa City?
Install a water filter rated for the specific contaminants found in Iowa City's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Iowa City have any water quality violations?
Yes, Iowa City currently has 338 active violations. See the violations section above for details.