Mason County contains 65 EPA-regulated facilities, 17 of which are currently flagged for significant noncompliance. The county also hosts 1 Superfund sites and 4 TRI chemical reporters. EPA has assessed $679.9k in lifetime penalties and TRI reporters disclosed roughly 1.8M lb of on-site releases. That facility count is below the West Virginia state average of 114 per county.
| Site | City | Status |
|---|---|---|
| West Virginia Ordnance Usarmy | Point Pleasant | Cleanup underway |
| Facility | City | On-site (lb) | Status |
|---|---|---|---|
| Felman Production, Inc. | Letart | 1.1M | Penalties |
| American Electric Power Mountaineer Plant | New Haven | 686.1k | Compliant |
| Apg Polytech, Llc, Apple Grove Plant | Apple Grove | 56.0k | Penalties |
| Icl-North America Inc - Gallipolis Ferry Plant | Gallipolis Ferry | 5.8k | Penalties |
| Facility | City | Penalties | Last Inspected |
|---|---|---|---|
| Cardinal Concrete Company - Robertsburg Plant | Robertsburg | $0 | 2022-04-11 |
| Point Pleasant Wastewater Treatment Plant | Point Pleasant | $0 | 2025-08-12 |
| Mine No. 1 - Ibr#2 Area | New Haven | $0 | 2025-03-20 |
| Town Of Leon Wastewater Treatment & Collection System | Leon | $0 | |
| Versailles Limited Liability Company | Mason | $0 | 2025-03-20 |
| River's Edge Campground | Glenwood | $0 | |
| Kanawha River Campground | $0 | 2016-10-19 | |
| Mason Water Dept | $0 | 2018-03-21 | |
| Point Pleasant Wtp | Point Pleasant | $0 | 2022-11-16 |
| Appalachian Power Company Dba American Electric Power - Mountaineer Plant | New Haven | $0 | 2025-02-19 |
| Point Pleasant Water Works-Treatment Plant | Pt. Pleasant | $0 | 2018-03-21 |
| Preparation Plant No. 1/ Refuse Disposal Area No. 1 | New Haven | $0 | 2025-03-20 |
| Hartford Town Of | $0 | 2018-03-21 | |
| New Haven Water Dept | New Haven | $0 | 2018-03-21 |
| Oldtown Campground | Point Pleasant | $0 | |
| Zuspan's Recycling | West Columbia | $0 | |
| U.s. Defense National Stockpile Center Point Pleasant Depot | Point Pleasant | $0 | 2022-05-18 |