EPA Air · by county
Air-emissions sources in Polk County, Iowa
- 1,161Facilities
11 changes to this record in 90 days; alerts $99/month.
Start the watch
- One source — $99/month
- One county — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
Every stationary source in Polk 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 Polk County
Each of the 1,151 operating major, synthetic minor and minor sources in Polk County, Iowa has a record page: every source in Polk County, A to Z.
By emissions classification in Polk 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 Polk 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 131
- 2025 inspections 304
- 2024 inspections 405
- 2023 inspections 487
- 2022 inspections 392
- 2021 inspections 356
- 2020 inspections 265
- 2019 inspections 467
- 2018 inspections 386
- 2017 inspections 497
Violations in Polk 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 Polk County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 17
- 2025 stack tests 16
- 2024 stack tests 17
- 2023 stack tests 23
- 2022 stack tests 14
- 2021 stack tests 9
- 2020 stack tests 12
- 2019 stack tests 19
- 2018 stack tests 20
- 2017 stack tests 4
Inspections in Polk County, year by year · Violations in Polk County, year by year · Stack tests in Polk County, year by year
Other counties in Iowa
Every county in the state with at least three sources on file.
- Monona County 16
- Monroe County 17
- Montgomery County 16
- Muscatine County 75
- O'Brien County 34
- Osceola County 13
- Page County 31
- Palo Alto County 24
- Plymouth County 30
- Pocahontas County 21
- Pottawattamie County 88
- Poweshiek County 36
- Ringgold County 8
- Sac County 25
- Scott County 145
- Shelby County 17
- Sioux County 78
- Story County 87
- Tama County 22
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 Polk county, IA. It lists 1,161 facilities in Polk county and notes 17 major sources.