EPA Air · by county
Air-emissions sources in Middlesex County, New Jersey
- 540Facilities
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Every stationary source in Middlesex County, New Jersey 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.
Every source’s record in Middlesex County
Each of the 537 operating major, synthetic minor and minor sources in Middlesex County, New Jersey has a record page: every source in Middlesex County, A to Z.
By emissions classification in Middlesex 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 Middlesex 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 28
- 2025 inspections 42
- 2024 inspections 39
- 2023 inspections 36
- 2022 inspections 22
- 2021 inspections 26
- 2020 inspections 28
- 2019 inspections 55
- 2018 inspections 72
- 2017 inspections 52
Violations in Middlesex County, by year
A high-priority violation is the most serious class of Clean Air Act non-compliance an agency records against a source; a federally reportable violation is the next step down in severity.
- 2026 violations 9
- 2025 violations 41
- 2024 violations 34
- 2023 violations 33
- 2022 violations 18
- 2021 violations 20
- 2020 violations 30
- 2019 violations 8
- 2018 violations 9
- 2017 violations 10
Stack tests in Middlesex County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2023 stack tests 6
- 2022 stack tests 20
- 2021 stack tests 15
- 2020 stack tests 28
- 2019 stack tests 7
- 2018 stack tests 15
- 2017 stack tests 15
Inspections in Middlesex County, year by year · Violations in Middlesex County, year by year · Stack tests in Middlesex County, year by year
Other counties in New Jersey
Every county in the state with at least three sources on file.
- Bergen County 631
- Burlington County 236
- Camden County 482
- Cape May County 81
- Cumberland County 177
- Essex County 605
- Gloucester County 200
- Hudson County 567
- Hunterdon County 84
- Mercer County 185
- Monmouth County 267
- Morris County 320
- Ocean County 146
- Passaic County 356
- Salem County 78
- Somerset County 179
- Sussex County 91
- Undetermined County 706
- Union County 380
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.