EPA Air · by county
Air-emissions sources in Washington County, Mississippi
- 23Facilities
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Every stationary source in Washington County, Mississippi 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 Washington County
Each of the 23 operating major, synthetic minor and minor sources in Washington County, Mississippi has a record page: every source in Washington County, A to Z.
By emissions classification in Washington 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 Washington 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 7
- 2025 inspections 7
- 2024 inspections 5
- 2023 inspections 8
- 2022 inspections 6
- 2021 inspections 9
- 2020 inspections 8
- 2019 inspections 6
- 2018 inspections 12
- 2017 inspections 9
Violations in Washington 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 Washington County, by year
A stack test measures what a source actually emits, at the stack, against the limit in its permit.
- 2025 stack tests 4
- 2024 stack tests 8
- 2023 stack tests 9
- 2022 stack tests 10
- 2021 stack tests 9
- 2020 stack tests 6
- 2019 stack tests 10
- 2018 stack tests 14
- 2017 stack tests 9
Inspections in Washington County, year by year · Violations in Washington County, year by year · Stack tests in Washington County, year by year
Other counties in Mississippi
Every county in the state with at least three sources on file.
- Scott County 9
- Sharkey County 4
- Simpson County 5
- Smith County 20
- Stone County 5
- Sunflower County 4
- Tate County 23
- Tippah County 11
- Tishomingo County 13
- Tunica County 3
- Undetermined County 42
- Union County 16
- Walthall County 7
- Warren County 22
- Wayne County 22
- Webster County 3
- Wilkinson County 22
- Winston County 6
- Yazoo County 15
Washington County carries 23 of the 1,012 air-emissions sources this register holds in Mississippi, which places it 14th of 74 in that cohort.
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 Washington county, MS. It lists 23 facilities in Washington county and 10 major sources.