EPA Air · by county
Air-emissions sources in Sioux County, Iowa
- 78Facilities
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Every stationary source in Sioux County, Iowa 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 Sioux County
Each of the 73 operating major, synthetic minor and minor sources in Sioux County, Iowa has a record page: every source in Sioux County, A to Z.
By emissions classification in Sioux 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 Sioux 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 Sioux County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2025 stack tests 5
- 2023 stack tests 3
- 2021 stack tests 3
- 2020 stack tests 4
- 2019 stack tests 4
- 2018 stack tests 4
Inspections in Sioux County, year by year · Stack tests in Sioux County, year by year
Other counties in Iowa
Every county in the state with at least three sources on file.
- Palo Alto County 24
- Plymouth County 30
- Pocahontas County 21
- Polk County 1,161
- Pottawattamie County 88
- Poweshiek County 36
- Ringgold County 8
- Sac County 25
- Scott County 145
- Shelby County 17
- Story County 87
- Tama County 22
- Taylor County 8
- Undetermined County 3
- Union County 19
- Van Buren County 13
- Wapello County 45
- Warren County 35
- Washington County 38
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.
What this page shows
The page covers Clean Air Act facilities in the EPA air register for Sioux county, IA. It lists 78 facilities in Sioux county and 1 major source.