Hamilton County contains 109 EPA-regulated facilities, 4 of which are currently flagged for significant noncompliance. The county also hosts 0 Superfund sites and 13 TRI chemical reporters. EPA has assessed $600.1k in lifetime penalties and TRI reporters disclosed roughly 54.7k lb of on-site releases. That facility count is well above the Indiana state average of 63 per county.
| Facility | City | On-site (lb) | Status |
|---|---|---|---|
| King Systems Corporation | Noblesville | 33.7k | Compliant |
| Industrial Dielectrics Incorporated Dba Idi Composites International | Noblesville | 9.7k | Compliant |
| Industrial Dielectrics | Noblesville | 8.7k | Compliant |
| Countrymark Refining And Logistics Llc | Westfield | 2.2k | Compliant |
| Indiana Mills & Manufacturing Inc. | Westfield | 279 | Compliant |
| Helmer Scientific Inc | Noblesville | 23 | Compliant |
| Biddle Precision Components, Inc. | Sheridan | 2 | Compliant |
| Facility | City | Penalties | Last Inspected |
|---|---|---|---|
| Marina Limited Partnership | Noblesville | $0 | |
| Indiana-American Water Company Inc- Sheridan Regional Lift Station | Sheridan | $0 | |
| Smyrna Ready Mix Plant 230 | Fishers | $0 | |
| Beck's Superior Hybrids Inc | Atlanta | $0 | 2026-03-25 |