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ConfirmedClean Air Actformal

Clean Air Act violation — MICROSOFT CORPORATION – LEESBURG DATA CENTER (IAD01-02-03-04-05)

Loudoun County · VA

Reporting by · Updated Aug 21, 2025

Air HPV status: Unaddressed-State; 4 of last 12 quarters with a Clean Air Act violation; 1 recent violation(s); Pollutant: Carbon monoxide, NITROGEN OXIDES NO2, PARTICULATE MATTER < 10 UM, PARTICULATE MATTER < 2.5 UM, VOLATILE ORGANIC COMPOUNDS (VOCS)

Legal status
Confirmed
An agency has made a compliance finding.
Pollutant
Carbon monoxide, NITROGEN OXIDES NO2, PARTICULATE MATTER < 10 UM, PARTICULATE MATTER < 2.5 UM, VOLATILE ORGANIC COMPOUNDS (VOCS)
Penalty
None assessed
No EPA penalty on record
Date occurred
—
Date reported
August 21, 2025
Resolved
Unresolved

1 EPA enforcement action within 1 mile of this site (PostGIS ST_DWithin, not editorial judgment).

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Sourced from EPA ECHO and primary legal filings. Legal status is tracked precisely — we never mark a case settled without a documented penalty or order. See methodology.