EPA Air · by county
Air-emissions sources in Williamson County, Illinois
- 76Facilities
Every stationary source in Williamson County, Illinois 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 76 operating major, synthetic minor and minor sources in Williamson County, Illinois 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.
- Minor source 72
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.
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 · Stack tests in Williamson County, year by year
Other counties in Illinois
Every county in the state with at least three sources on file.
- Schuyler County 18
- Scott County 12
- Shelby County 48
- St. Clair County 328
- Stark County 14
- Stephenson County 84
- Tazewell County 163
- Undetermined County 3
- Union County 15
- Vermilion County 131
- Wabash County 19
- Warren County 37
- Washington County 39
- Wayne County 46
- White County 36
- Whiteside County 110
- Will County 736
- Winnebago County 408
- Woodford County 61
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, IL. It lists 76 facilities in Williamson county and 2 major sources.