EPA Air · by county
Air-emissions sources in Harris County, Texas
- 763Facilities
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Every stationary source in Harris County, Texas 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 Harris County
Each of the 743 operating major, synthetic minor and minor sources in Harris County, Texas has a record page: every source in Harris County, A to Z.
By emissions classification in Harris 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 Harris 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 47
- 2025 inspections 52
- 2024 inspections 38
- 2023 inspections 54
- 2022 inspections 37
- 2021 inspections 65
- 2020 inspections 59
- 2019 inspections 36
- 2018 inspections 63
- 2017 inspections 50
Violations in Harris 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 38
- 2025 violations 34
- 2024 violations 18
- 2023 violations 24
- 2022 violations 24
- 2021 violations 63
- 2020 violations 62
- 2019 violations 61
- 2018 violations 45
- 2017 violations 62
Stack tests in Harris County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2023 stack tests 17
- 2022 stack tests 15
- 2021 stack tests 33
- 2020 stack tests 118
- 2019 stack tests 105
- 2018 stack tests 102
- 2017 stack tests 75
Inspections in Harris County, year by year · Violations in Harris County, year by year · Stack tests in Harris County, year by year
Other counties in Texas
Every county in the state with at least three sources on file.
- Gonzales County 8
- Gray County 25
- Grayson County 29
- Gregg County 57
- Grimes County 13
- Guadalupe County 14
- Hale County 12
- Hansford County 13
- Hardeman County 5
- Hardin County 14
- Harrison County 46
- Haskell County 3
- Hays County 12
- Hemphill County 38
- Henderson County 17
- Hidalgo County 59
- Hill County 7
- Hockley County 6
- Hood County 14
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 Harris county, TX. It lists 763 facilities in Harris county and 268 major sources.