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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Water quality data for 1 cities serving 269,994 residents
Allen County in Indiana has an average water quality score of 84/100 (Grade B) based on analysis of 1 municipal water systems. The county's water systems serve approximately 269,994 residents.
Overall, Allen County demonstrates good water quality standards. 1 of 1 cities exceed the county average, with Fort Wayne leading with a score of 84/100.
1 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Fort Wayne Biggest deduction: 1 health-based violation (MCL/treatment-technique) in the last 5 years (−10 pts) | 84 | B | 269,994 |
Real EPA readings across county water systems (lead: latest 90th percentile; PFAS: UCMR5 2023–2026; others: 2012–2019 averages)
| Contaminant | Avg Level | Max Level | EPA Limit | % of Limit | Cities |
|---|---|---|---|---|---|
| HAA5 (2012–2019 avg) | 22.884 ug/L | 22.884 ug/L | 60 ug/L | 38.1% | 1 |
| TTHM (2012–2019 avg) | 30.232 ug/L | 30.232 ug/L | 80 ug/L | 37.8% | 1 |
| Lead (90th percentile) | 2.62 ppb | 2.62 ppb | 15 ppb | 17.5% | 1 |
| Fluoride (2012–2019 avg) | 0.66 mg/L | 0.66 mg/L | 4 mg/L | 16.5% | 1 |
| Nitrate (2012–2019 avg) | 1.5 mg/L | 1.5 mg/L | 10 mg/L | 15% | 1 |
| PFAS (PFOA/PFOS max, UCMR5) | 0 ppt | 0 ppt | 4 ppt | 0% | 1 |
| Arsenic (2012–2019 avg) | 0 ug/L | 0 ug/L | 10 ug/L | 0% | 1 |
| Uranium (2012–2019 avg) | 0 ug/L | 0 ug/L | 30 ug/L | 0% | 1 |
Recent violations across county water systems
Health-based: Treatment technique — OCCT/SOWT Study/Recommendation - Lead and Copper Rule
12/31/2021
Reporting — Report Sample Result/Fail Monitor (RTCR) - Revised Total Coliform Rule
11/30/2025
Reporting — Report Sample Result/Fail Monitor (RTCR) - Revised Total Coliform Rule
5/31/2021
Water quality in Allen County, Indiana reflects the region's unique combination of water sources, treatment infrastructure, and environmental factors. Our comprehensive analysis examines 1 municipal water systems serving a combined population of over 269,994 residents.
The county shows strong water quality performance, with scores ranging from 84/100 in Fort Wayne to 84/100 in Fort Wayne. This 0-point spread indicates relatively consistent water quality standards across municipal systems.
The most prevalent contaminants detected across Allen County water systems include HAA5 (2012–2019 avg), TTHM (2012–2019 avg), Lead (90th percentile). Every county-wide average sits below 50% of its EPA Maximum Contaminant Level (MCL).
Allen County's water quality is generally good. Residents can feel confident in their tap water quality, though those with specific health concerns or sensitivity to certain contaminants may still benefit from filtration. Regular review of your city's annual Consumer Confidence Report is recommended.
Allen County has an average water quality score of 84/100 (Grade B) based on analysis of 1 municipal water systems serving 269,994 residents.
Fort Wayne has the highest water quality score in Allen County at 84/100. View the detailed report for Fort Wayne.
Most cities in Allen County have water that meets EPA standards. However, a water filter can provide additional protection and improve taste. The need depends on your specific city and any personal health considerations.
Click on any city in the rankings table above to view its detailed water quality report, including contaminant levels, EPA compliance history, and filter recommendations.