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ConfirmedClean Air Actformal

Clean Air Act violation — MICROSOFT CORPORATION - MKE 3B DATA CENTER

Richland County · WI

Reporting by · Updated Jul 31, 2025

Air HPV status: No High Priority Violation; 1 of last 12 quarters with a Clean Air Act violation; 6 recent violation(s); Pollutant: FACIL

Legal status
Confirmed
An agency has made a compliance finding.
Pollutant
FACIL
Penalty
None assessed
No EPA penalty on record
Date occurred
—
Date reported
July 31, 2025
Resolved
Unresolved

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

View primary source →Facility profile

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.