State sheet · WI
Tier II reporting requirements in Wisconsin
- Deadline
- 1 March, yearly
- Takes our file
- No
- Own thresholds
- No — federal
- Fee
- $275–$2,090
- Filing route read
- 2026-09-11
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How Wisconsin takes it
Wisconsin does not take the federal Tier2 Submit file. You file through the WHOPRS website — and the filing is four things, not one: the Tier II inventory form, a site plan, the inventory form fee statement, and the fee itself. All four have to be in the division’s hands by 1 March. The rule counts you as late if the money has not arrived, not just the form.
This state does not take the file. Our answer works as the worksheet you type from, with the rule behind every number.
The filing is due 1 March each year and covers the calendar year before it. Wisconsin does not pass it on for you — we checked. Filing closes the state’s copy only; your local committee and fire department each need their own from you.
Before you send it — what else Wisconsin asks for
The site plan is the part people do not expect. Wisconsin defines it as facility plans showing where the hazardous chemicals are stored on the site — a drawing, which the file we build does not contain; you make that yourself. Two more traps. If you filed last year and are under the thresholds this year, you do not simply stop: you still return the fee statement the state sends you, saying why you are out. And paying late costs a flat 20 per cent surcharge on whatever is unpaid. Separately, if an extremely hazardous substance goes over its threshold planning quantity, Wisconsin adds a one-time $1,080 planning fee due within 60 days, with the same surcharge if it is late — but with fewer than 10 full-time-equivalent employees you are exempt from that planning fee and from the yearly inventory fee too, under 20,000 paid hours a year, which covers most small sites.
Does Wisconsin set its own limits?
Wisconsin keeps the federal numbers and the federal list, but its own law reaches facilities the federal rule does not. What you keep decides the numbers; who you are decides whether the duty reaches you.
Wisconsin keeps the federal numbers: 10,000 lb for a hazardous chemical, and 500 lb or the planning quantity for an extremely hazardous substance, whichever is lower. What its statute adds is reach. Schools, universities, private research sites and government bodies are named as covered, alongside ordinary OSHA workplaces. A site that reads the federal rule and thinks it is out may still be in. Retail gas stations get the federal numbers too, spelled out rather than left to inference.
The words we read
Wisconsin Statutes 323.60 (docs.legis.wisconsin.gov), read 2026-09-11 through the Internet Archive because the site does not answer from our network at all (a connection timeout, not a block), so this is the statute as of that snapshot. 323.60(5)(c): “All facilities in this state covered under 42 USC 11021 and all public agencies and private agencies in this state at which a hazardous chemical is present at or above an applicable threshold quantity shall comply with the reporting requirements under 42 USC 11021 and 11022.” 323.60(6): “Threshold quantities for the facilities of public agencies and private agencies shall be identical to the threshold quantities established by the federal act or by regulations promulgated under the federal act.” The two added classes are defined in 323.60(1): a “private agency” is “a privately owned and operated research facility or educational institution”, and a “public agency” is “a state or local office, agency, board, commission, committee, council, department, research facility, educational institution or public body corporate or politic … or a governmental or quasi-governmental corporation.” 323.60(5)(c) also tells the division to set “minimum threshold levels for reporting by retail gas stations that are identical to the minimum threshold levels for reporting under 42 USC 11021 and 11022.”
Where we read this
- Wisconsin Emergency Management, EPCRA page, read 2026-09-01, citing s. 323.60 Wis. Stats. and Form DMA 1003. On the section 311 side it names the three recipients in its own words: an owner or operator “must submit to WEM, LEPC, and the local fire department, an SDS for each hazardous chemical OR an SDS Chemical List.” Nothing in Wisconsin’s materials says the division passes the inventory on for you, and we do not infer that it does. Wis. Stat. 323.60(5)(c) adopts the federal recipient list: facilities “shall comply with the reporting requirements under 42 USC 11021 and 11022,” and 42 USC 11022(a)(1) names the commission, the committee and the fire department with jurisdiction.Wisconsin Administrative Code ch. WEM 1, read 2026-09-09 and 2026-09-11 through Internet Archive snapshots dated 2026-02-18 and 2026-08-12 (docs.legis.wisconsin.gov does not answer from our network — a timeout, not a block — so this is the code as of those dates). WEM 1.04(1): a facility “shall submit a Tier II inventory form, a site plan, inventory form fee statement and the appropriate inventory form fee annually. To be considered timely, the required documentation and fees must be received physically or electronically by the division on or before March 1.” WEM 1.02(11) defines the site plan: “facility plans which indicate the storage location of hazardous chemicals on the site as required under s. WEM 1.04 (1).” WEM 1.04(2): a facility no longer subject “shall timely submit any inventory form fee statement received from the division stating why the facility is no longer subject.” WEM 1.05: late payment draws “a surcharge of 20% of the unpaid balance of the fee due.”Same chapter, on the amounts. WEM 1.03: “a fee of $1,080 per facility with the one-time emergency planning notification required under s. 323.60 (5)(a), Stats.” WEM 1.04(7) sets the annual inventory form fee in eight bands, by the number of hazardous chemicals listed and whether the cumulative maximum daily amount reaches 100,000 pounds: one chemical “$275 … $330”; “2 to 10 … $550 … $655”; “11 to 100 … $825 … $990”; “101 to 200 … $1,010 … $1,210”; “201 to 300 … $1,195 … $1,430”; “301 to 400 … $1,380 … $1,650”; “401 to 500 … $1,560 … $1,870”; “over 500 … $1,745 … $2,090”; “For temporary construction facilities, $35” and “For batch plants, $35”.Checked 2026-09-11
- Wisconsin Statutes 323.60 (docs.legis.wisconsin.gov), read 2026-09-11 through the Internet Archive because the site does not answer from our network at all (a connection timeout, not a block), so this is the statute as of that snapshot. 323.60(5)(c): “All facilities in this state covered under 42 USC 11021 and all public agencies and private agencies in this state at which a hazardous chemical is present at or above an applicable threshold quantity shall comply with the reporting requirements under 42 USC 11021 and 11022.” 323.60(6): “Threshold quantities for the facilities of public agencies and private agencies shall be identical to the threshold quantities established by the federal act or by regulations promulgated under the federal act.” The two added classes are defined in 323.60(1): a “private agency” is “a privately owned and operated research facility or educational institution”, and a “public agency” is “a state or local office, agency, board, commission, committee, council, department, research facility, educational institution or public body corporate or politic … or a governmental or quasi-governmental corporation.” 323.60(5)(c) also tells the division to set “minimum threshold levels for reporting by retail gas stations that are identical to the minimum threshold levels for reporting under 42 USC 11021 and 11022.”The state’s own code
- Wisconsin’s own Tier II pageWe can be right today and the state can change tomorrow. This link does not go stale.
If something here is wrong, the checker has a way to tell us on every answer screen. We would rather be corrected than confident.
Find out whether you have to file
Tell us what you keep on site and we work it out against the federal list and Wisconsin’s own rules, showing the regulation behind every number.
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