EPA Air · by county
Air-emissions sources in Johnson County, Iowa
- 77Facilities
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Every stationary source in Johnson 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 Johnson County
Each of the 76 operating major, synthetic minor and minor sources in Johnson County, Iowa has a record page: every source in Johnson County, A to Z.
By emissions classification in Johnson 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 Johnson 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 3
- 2025 inspections 6
- 2024 inspections 6
- 2023 inspections 3
- 2022 inspections 5
- 2021 inspections 4
- 2020 inspections 5
- 2019 inspections 7
- 2018 inspections 3
- 2017 inspections 5
Stack tests in Johnson County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 7
- 2025 stack tests 11
- 2024 stack tests 14
- 2023 stack tests 13
- 2022 stack tests 12
- 2021 stack tests 8
- 2020 stack tests 10
- 2019 stack tests 9
- 2018 stack tests 11
- 2017 stack tests 10
Inspections in Johnson County, year by year · Stack tests in Johnson County, year by year
Other counties in Iowa
Every county in the state with at least three sources on file.
- Hardin County 34
- Harrison County 16
- Henry County 27
- Howard County 16
- Humboldt County 25
- Ida County 16
- Iowa County 29
- Jackson County 26
- Jasper County 40
- Jefferson County 27
- Jones County 29
- Keokuk County 22
- Kossuth County 33
- Lee County 52
- Linn County 336
- Louisa County 18
- Lucas County 7
- Lyon County 19
- Madison County 21
Facilities
County as filed on the facility record. Figures from EPA’s ICIS-AIR download.