Indiana
Water quality data from the EPA Safe Drinking Water Information System
Water Systems
9,915
Active public water systems
Population Served
5.74M
Residents with piped water
Lead Violations
119
Systems exceeding 15 ppb
Copper Violations
249
Lead & Copper Rule
Average Lead Level
EPA Action Level: 15 ppb
MCLG (health goal): 0 ppb
Average across 2243 systems with reported lead data.
Violations Detected
368 water systems in Indiana have reported violations under the Lead and Copper Rule. These utilities are required to notify customers and take corrective action.
Water Systems: Highest Lead Levels
| System Name | City | Population | Lead Level | Status | Sample Date |
|---|---|---|---|---|---|
| INDIANAPOLIS | 14,148 | 19.00 ppb | Violation | 2007-12-31 | |
| WASHINGTON | 13,690 | 13.00 ppb | OK | 2023-12-31 | |
| LOGANSPORT | 18,369 | 12.50 ppb | OK | 2023-12-31 | |
| MISHAWAKA | 49,675 | 8.90 ppb | OK | 2023-12-31 | |
| EAST CHICAGO | 26,370 | 8.00 ppb | OK | 2024-12-31 | |
| DYER | 16,800 | 7.70 ppb | OK | 2023-12-31 | |
| PERU | 11,417 | 7.00 ppb | OK | 2023-12-31 | |
| OAKLAND CITY | 10,000 | 6.90 ppb | OK | 2025-12-31 | |
| LOGANSPORT | 12,861 | 6.90 ppb | OK | 2013-12-31 | |
| HUNTINGTON | 17,300 | 6.85 ppb | OK | 2025-12-31 | |
| DUBOIS | 13,503 | 6.70 ppb | OK | 2023-12-31 | |
| VALPARAISO | 36,000 | 5.60 ppb | OK | 2023-12-31 | |
| DANVILLE | 10,500 | 5.50 ppb | OK | 2025-12-31 | |
| INDIANAPOLIS | 880,345 | 5.18 ppb | OK | 2025-12-31 | |
| BLOOMINGTON | 83,000 | 5.10 ppb | OK | 2025-12-31 |
Showing top 15 of 2228 systems with lead data. Action level: 15 ppb.
Systems With Active Violations
These water systems have exceeded EPA limits and must take corrective action.
GREENWOOD · Pop. 86,813
Lead: 2.00 ppb (2024-12-31)
LAFAYETTE · Pop. 70,835
Lead: 3.80 ppb (2025-12-31)
INDIANAPOLIS · Pop. 49,000
Lead: 0.76 ppb (2024-12-31)
ELKHART · Pop. 46,455
Lead: 2.00 ppb (2025-12-31)
VALPARAISO · Pop. 36,000
Lead: 5.60 ppb (2023-12-31)
GREENWOOD · Pop. 35,533
Lead: 1.00 ppb (2023-12-31)
GREENFIELD · Pop. 26,671
Lead: 1.10 ppb (2023-12-31)
BROWNSBURG · Pop. 23,750
Lead: 0.00 ppb (2025-12-31)
LOGANSPORT · Pop. 18,369
Lead: 12.50 ppb (2023-12-31)
FRANKFORT · Pop. 16,422
Lead: 1.08 ppb (2023-12-31)
LEBANON · Pop. 16,098
Lead: 1.05 ppb (2023-12-31)
GREENWOOD · Pop. 15,930
Lead: 1.00 ppb (2023-12-31)
Water Source Types
Air Quality
GoodAvg AQI
47.5
PM2.5
6.6 µg/m³
Unhealthy Days
7
Primary Pollutant
Ozone
Source: EPA AirNow & American Lung Association 2024 State of the Air. AQI scale: 0–50 Good · 51–100 Moderate · 101–150 Sensitive Groups · 151+ Unhealthy.
PFAS Contamination
Moderate DetectionPFAS (per- and polyfluoroalkyl substances), known as “forever chemicals,” are a group of synthetic chemicals that persist indefinitely in the environment and human body. The EPA set a maximum contaminant level (MCL) of 4 parts per trillion (ppt) for PFOA and PFOS in April 2024. View national PFAS tracker →
Systems Tested
268
PFAS Detected
95
Detection Rate
35.4%
Exceeding MCL (4 ppt)
16(6.0%)
Highest recorded level: 48 ppt (EPA MCL: 4 ppt). Manufacturing corridor; significant PFAS from industrial discharge