EPA Air · by county
Air-emissions sources in Hamilton County, Iowa
- 27Facilities
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Every stationary source in Hamilton 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 Hamilton County
Each of the 27 operating major, synthetic minor and minor sources in Hamilton County, Iowa has a record page: every source in Hamilton County, A to Z.
By emissions classification in Hamilton 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 Hamilton 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.
Violations in Hamilton 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 Hamilton County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2025 stack tests 3
- 2024 stack tests 4
- 2020 stack tests 3
- 2019 stack tests 3
- 2018 stack tests 11
- 2017 stack tests 5
Inspections in Hamilton County, year by year · Violations in Hamilton County, year by year · Stack tests in Hamilton County, year by year
Other counties in Iowa
Every county in the state with at least three sources on file.
- Dickinson County 32
- Dubuque County 138
- Emmet County 27
- Fayette County 26
- Floyd County 32
- Franklin County 17
- Fremont County 12
- Greene County 21
- Grundy County 23
- Guthrie County 17
- Hancock County 30
- Hardin County 34
- Harrison County 16
- Henry County 27
- Howard County 16
- Humboldt County 25
- Ida County 16
- Iowa County 29
- Jackson County 26
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 Hamilton county, IA. It lists 27 facilities in Hamilton county, of which 3 are major sources.