Iowa City, Iowa Water Quality Report
Comprehensive water safety analysis • Updated February 2026
Iowa City maintains excellent water quality with all 9 tested contaminants well below EPA safety limits.
Water Safety Overview
Generally Safe. Iowa City's tap water meets EPA standards. Score: 94/100.
Want to understand your score better? Learn how scores are calculated →
All Detected Contaminants
9 contaminants tested • EPA SDWIS data
| Contaminant | Level Detected | EPA Limit | % of Limit | Status |
|---|---|---|---|---|
Fluoride | 0.704 mg/L | 4.00 mg/L | 17.6% | Safe |
Total Trihalomethanes | 12.40 ug/L | 80.00 ug/L | 15.5% | Safe |
Nitrate | 1.40 mg/L | 10.00 mg/L | 14.0% | Safe |
Mercury | 0.0002 mg/L | 0.0020 mg/L | 12.4% | Safe |
Copper | 0.115 mg/L | 1.30 mg/L | 8.9% | Safe |
Arsenic | 0.0008 mg/L | 0.010 mg/L | 7.8% | Safe |
Chromium | 0.0064 mg/L | 0.100 mg/L | 6.4% | Safe |
Nitrite | 0.064 mg/L | 1.00 mg/L | 6.4% | Safe |
Lead | 0.0005 mg/L | 0.015 mg/L | 3.5% | Safe |
Recommended Water Filters for Iowa City
Based on detected contaminants
Reverse Osmosis System
Best for Iowa City. Removes 95-99% of contaminants including heavy metals, PFAS, and nitrates.
- ✓ Removes lead
- ✓ Removes arsenic
- ✓ Removes nitrates
- ✓ Removes total dissolved solids
Activated Carbon Filter
Good for Iowa City. Removes chlorine, improves taste, and filters many organic compounds.
- ✓ Removes chlorine and chloramine
- ✓ Improves taste and odor
- ✓ Filters pesticides and VOCs
NSF 53 Lead Certification Required
Lead detected in Iowa City. Ensure any filter is NSF/ANSI 53 certified for lead removal.
Water System Information
IOWA CITY WATER SYSTEM
- PWS ID:
- IA187306
- Population Served:
- 74,391
- Water Source:
- mixed
Iowa City Water Quality Score
Based on EPA contaminant data and compliance records
Positive Findings
- Excellent overall water quality
- All tested contaminants well below EPA limits
- No violations in the past 3 years
Protect Your Family's Water
Even with good water quality, many families choose to filter their water for extra peace of mind.
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