EPA Air · by county
Air-emissions sources in Ottawa County, Michigan
- 82Facilities
Every stationary source in Ottawa County, Michigan 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 Ottawa County
Each of the 82 operating major, synthetic minor and minor sources in Ottawa County, Michigan has a record page: every source in Ottawa County, A to Z.
By emissions classification in Ottawa 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 Ottawa 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 25
- 2025 inspections 31
- 2024 inspections 26
- 2023 inspections 30
- 2022 inspections 20
- 2021 inspections 27
- 2020 inspections 39
- 2019 inspections 23
- 2018 inspections 33
- 2017 inspections 42
Violations in Ottawa 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 Ottawa County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 9
- 2025 stack tests 16
- 2024 stack tests 4
- 2023 stack tests 10
- 2022 stack tests 5
- 2020 stack tests 10
- 2019 stack tests 6
- 2018 stack tests 13
- 2017 stack tests 9
Inspections in Ottawa County, year by year · Violations in Ottawa County, year by year · Stack tests in Ottawa County, year by year
Other counties in Michigan
Every county in the state with at least three sources on file.
- Montmorency County 71
- Muskegon County 61
- Newaygo County 9
- Oakland County 245
- Oceana County 4
- Ogemaw County 8
- Ontonagon County 4
- Osceola County 13
- Oscoda County 10
- Otsego County 143
- Presque Isle County 7
- Saginaw County 38
- Sanilac County 14
- Schoolcraft County 5
- Shiawassee County 20
- St. Clair County 59
- St. Joseph County 33
- Tuscola County 19
- Undetermined County 7
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 Ottawa county, MI, that appear in the EPA air register. It lists 82 facilities in Ottawa county, including 11 major sources.