EPA Air · by county
Air-emissions sources in Washington County, Maryland
- 271Facilities
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Every stationary source in Washington County, Maryland 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 268 operating major, synthetic minor and minor sources in Washington County, Maryland 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 3
- 2025 inspections 7
- 2024 inspections 27
- 2023 inspections 31
- 2022 inspections 31
- 2021 inspections 22
- 2020 inspections 20
- 2019 inspections 22
- 2018 inspections 29
- 2017 inspections 39
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.
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 Maryland
Every county in the state with at least three sources on file.
- Caroline County 44
- Carroll County 224
- Cecil County 142
- Charles County 134
- Dorchester County 85
- Frederick County 383
- Garrett County 79
- Harford County 317
- Howard County 234
- Kent County 47
- Montgomery County 1,332
- Prince George's County 1,450
- Queen Anne's County 45
- Somerset County 58
- St. Mary's County 43
- Talbot County 61
- Undetermined County 891
- Wicomico County 150
- Worcester County 69
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, MD. It lists 271 facilities and 4 major sources.