EPA Air · by county
Air-emissions sources in Smith County, Mississippi
- 20Facilities
Every stationary source in Smith County, Mississippi 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 Smith County
Each of the 20 operating major, synthetic minor and minor sources in Smith County, Mississippi has a record page: every source in Smith County, A to Z.
By emissions classification in Smith 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 Smith 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 6
- 2025 inspections 10
- 2024 inspections 7
- 2023 inspections 9
- 2022 inspections 4
- 2021 inspections 5
- 2019 inspections 8
- 2017 inspections 8
Violations in Smith 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.
Stack tests in Smith County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 25
- 2025 stack tests 25
- 2024 stack tests 15
- 2023 stack tests 20
- 2022 stack tests 20
- 2021 stack tests 16
- 2020 stack tests 24
- 2019 stack tests 25
- 2018 stack tests 41
- 2017 stack tests 20
Inspections in Smith County, year by year · Violations in Smith County, year by year · Stack tests in Smith County, year by year
Other counties in Mississippi
Every county in the state with at least three sources on file.
- Panola County 10
- Pearl River County 10
- Perry County 7
- Pike County 11
- Pontotoc County 9
- Prentiss County 5
- Rankin County 24
- Scott County 9
- Sharkey County 4
- Simpson County 5
- Stone County 5
- Sunflower County 4
- Tate County 23
- Tippah County 11
- Tishomingo County 13
- Tunica County 3
- Undetermined County 42
- Union County 16
- Walthall County 7
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.