EPA Air · by county
Air-emissions sources in Hamilton County, Indiana
- 25Facilities
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Every stationary source in Hamilton County, Indiana 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 23 operating major, synthetic minor and minor sources in Hamilton County, Indiana 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.
- 2026 inspections 3
- 2024 inspections 4
- 2023 inspections 4
- 2022 inspections 3
- 2021 inspections 5
- 2019 inspections 3
- 2018 inspections 5
- 2017 inspections 3
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.
- 2024 stack tests 16
- 2023 stack tests 9
- 2022 stack tests 14
- 2021 stack tests 4
- 2019 stack tests 10
- 2018 stack tests 16
- 2017 stack tests 12
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 Indiana
Every county in the state with at least three sources on file.
- Delaware County 18
- Dubois County 20
- Elkhart County 155
- Fayette County 3
- Floyd County 15
- Fountain County 7
- Fulton County 6
- Gibson County 12
- Grant County 20
- Greene County 11
- Hancock County 11
- Harrison County 9
- Hendricks County 21
- Henry County 12
- Howard County 16
- Huntington County 19
- Jackson County 15
- Jasper County 16
- Jay County 12
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, IN. It lists 25 facilities in Hamilton county and 5 major sources.