EPA Air · by county
Air-emissions sources in Williamson County, Tennessee
- 32Facilities
Every stationary source in Williamson County, Tennessee 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 Williamson County
Each of the 32 operating major, synthetic minor and minor sources in Williamson County, Tennessee has a record page: every source in Williamson County, A to Z.
By emissions classification in Williamson 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 Williamson 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 9
- 2025 inspections 9
- 2024 inspections 8
- 2023 inspections 8
- 2022 inspections 9
- 2021 inspections 8
- 2020 inspections 8
- 2019 inspections 9
- 2018 inspections 6
- 2017 inspections 6
Violations in Williamson 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 Williamson County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
Inspections in Williamson County, year by year · Violations in Williamson County, year by year · Stack tests in Williamson County, year by year
Other counties in Tennessee
Every county in the state with at least three sources on file.
- Scott County 12
- Sequatchie County 6
- Sevier County 22
- Shelby County 177
- Smith County 9
- Sullivan County 59
- Sumner County 66
- Tipton County 8
- Trousdale County 4
- Undetermined County 26
- Unicoi County 12
- Union County 7
- Van Buren County 6
- Warren County 24
- Washington County 39
- Wayne County 10
- Weakley County 13
- White County 16
- Wilson County 59
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register for Williamson county, TN. It lists 32 facilities in Williamson county and 1 major source.