California Tier II Reporting: Deadline, Filing Method & Fees

Facilities in California storing hazardous chemicals above EPA reporting thresholds file an annual Tier II report through CERS (CalEPA). Log in to CERS and enter data — .t2s not accepted.

Quick facts
Manual portal entry
Filing deadline
Mar 1 (federal baseline)
Accepts .t2s file
No — manual entry
Filing fee
CORRECTED 2026-07: was hasFee=false, wrong. California's Unified Program is administered LOCALLY by each CUPA — there is no single statewide fee amount. After certifying in CERS and submitting, the facility's CUPA sends an invoice; amount varies by jurisdiction. Confirm the specific CUPA's current fee schedule per facility.
Portal
LEPC copy required?
Routed via CERS to the local Certified Unified Program Agency (CUPA), which administers distribution
Fire dept copy required?
Routed via CERS to the local CUPA
Routing data independently sourced and verified — check California’s current guidance before submitting, as requirements can change.
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Related reading
Do I need to file Tier II? A simple facility checklistUnderstanding Tier II reporting thresholdsManaging Tier II for multiple clients? See our founding consultant program
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