WI · reporting year 2026

Tier II reporting in Wisconsin

What a Wisconsin facility needs to know to file its EPCRA Section 312 Tier II report for reporting year 2026, due March 1, 2027.

5 of 8 fields for Wisconsin are not yet confirmed. Anything we have not confirmed directly with the state commission reads “Confirm with SERC” rather than showing a number we are not sure of. We would rather show you a gap than a guess.

State emergency response commission: Wisconsin Emergency Management (confirm)
Deadline: March 1 federal
Filing portal: Confirm with SERC
Accepts Tier2 Submit file: Confirm with SERC
State fee per facility: Confirm with SERC
Late / non-filing penalty: Confirm with SERC
Who may certify: Confirm with SERC
LEPC copy: Required federal
Fire department copy: Required federal

Deadline. EPCRA 312 requires the Tier II report for the prior calendar year to be submitted by March 1. A state may set an earlier date or require additional reporting.

Certification. 40 CFR 370 requires certification by the owner or operator, or the officially designated representative of the owner or operator. Several states narrow this to an employee or corporate officer of the facility.

Penalties. EPCRA 325 civil penalties apply to non-filing and are adjusted annually for inflation. State penalties may apply on top.

Three recipients, not one. A Tier II report goes to three places: the SERC, the LEPC for the district, and the fire department with jurisdiction over the facility. The state portal does not always satisfy all three.

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