EPA Air · by county
Air-emissions sources in Mercer County, Pennsylvania
- 108Facilities
Every stationary source in Mercer County, Pennsylvania that holds a Clean Air Act permit or is otherwise tracked by an air agency — planned, under construction, operating, seasonal or temporarily closed. Sources EPA records as permanently closed are not listed.
By emissions classification in Mercer County
A source’s classification is the size band its potential emissions put it in: a major source is large enough to need a Title V operating permit, a synthetic minor has accepted limits to stay below that line, and a minor source sits below it outright.
Inspections in Mercer County, by year
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source.
- 2026 — inspections 63
- 2025 — inspections 93
- 2024 — inspections 60
- 2023 — inspections 61
- 2022 — inspections 69
- 2021 — inspections 98
- 2020 — inspections 56
- 2019 — inspections 75
- 2018 — inspections 72
- 2017 — inspections 67
Other counties in Pennsylvania
Every county in the state with at least three sources on file.
- Jefferson County 64
- Juniata County 15
- Lackawanna County 118
- Lancaster County 251
- Lawrence County 85
- Lebanon County 94
- Lehigh County 149
- Luzerne County 217
- Lycoming County 168
- McKean County 70
- Mifflin County 21
- Monroe County 45
- Montgomery County 474
- Montour County 17
- Northampton County 154
- Northumberland County 107
- Perry County 22
- Philadelphia County 461
- Pike County 13
Facilities
| Facility↑↓ | Classification↑↓ | HPV |
|---|---|---|
| VALLEY BLK DV CBNLMS/WEST MIDDLESEX | Minor source | No |
| VISTA RESOURCES INC/CLARKS MILLS COMP STA | Minor source | No |
| WABTEC US RAIL GROVE CITY ENGINE/MERCER | Major source | No |
| WABTEC US RAIL GROVE CITY REMANUFACTURING/MERCER | Minor source | No |
| WENDELL AUGUST FORGE/GROVE CITY | Emissions classification unknown | No |
| WHEATLAND TUBE COUNCIL AVE PLT/WHEATLAND TUBE LLC | Major source | Yes |
| WHEATON & SONS CLNR/FARRELL | Minor source | No |
| WYCOMP LLC/FAIRVIEW TWP COMP STA | Minor source | Yes |
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.