Butler County contains 637 EPA-regulated facilities, 11 of which are currently flagged for significant noncompliance. The county also hosts 0 Superfund sites and 37 TRI chemical reporters. EPA has assessed $112.9M in lifetime penalties and TRI reporters disclosed roughly 1.9M lb of on-site releases. That facility count is well above the Pennsylvania state average of 222 per county.
| Facility | City | Penalties | Last Inspected |
|---|---|---|---|
| Armstrong Cement & Supply - Winfield | Cabot | $261.1k | 2026-02-26 |
| Marmon Keystone | East Butler | $7.5k | 2024-08-23 |
| Villa Vista Estates | Valencia | $1.2k | 2025-10-23 |
| Robinsons Mobile Home Park | Prospect | $0 | |
| John Wagner & Sons Auto Recycling | Harmony | $0 | 2024-10-25 |
| Amer Legion Post 243 | $0 | ||
| Brady Hills Ml-Well #2 Plant | Slippery Rock | $0 | 2026-01-10 |
| Shannon Mills Estates Stp | Renfrew | $0 | 2023-01-17 |
| Igloo Ice Cream-Treatment Room | Worthington | $0 | |
| Cashdollar Sports Complex | Evans City | $0 | 2025-09-08 |
| Timberlee Valley Stp | Evans City | $0 | 2022-12-28 |