EPA Air · by county
Air-emissions sources in Fairfield County, Connecticut
- 623Facilities
Every stationary source in Fairfield County, Connecticut 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 Fairfield County
Each of the 615 operating major, synthetic minor and minor sources in Fairfield County, Connecticut has a record page: every source in Fairfield County, A to Z.
By emissions classification in Fairfield 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 Fairfield 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 12
- 2025 inspections 15
- 2024 inspections 4
- 2023 inspections 10
- 2022 inspections 11
- 2021 inspections 9
- 2020 inspections 21
- 2019 inspections 15
- 2018 inspections 34
- 2017 inspections 37
Violations in Fairfield 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.
- 2026 violations 4
- 2025 violations 3
- 2024 violations 5
- 2023 violations 3
- 2022 violations 6
- 2021 violations 3
- 2020 violations 3
- 2019 violations 3
- 2018 violations 11
- 2017 violations 8
Stack tests in Fairfield County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2026 stack tests 13
- 2025 stack tests 13
- 2024 stack tests 22
- 2023 stack tests 15
- 2022 stack tests 15
- 2021 stack tests 14
- 2020 stack tests 15
- 2019 stack tests 18
- 2018 stack tests 22
- 2017 stack tests 24
Inspections in Fairfield County, year by year · Violations in Fairfield County, year by year · Stack tests in Fairfield County, year by year
Other counties in Connecticut
Every county in the state with at least three sources on file.
- Hartford County 762
- Litchfield County 156
- Middlesex County 120
- New Haven County 702
- New London County 161
- Tolland County 50
- Undetermined County 26
- Windham County 103
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 Fairfield county, CT. It lists 623 facilities in Fairfield county, of which 10 are major sources.