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Hazardous waste rules and statutes

Wisconsin's Legislature creates and revises the Wisconsin Statutes (Wis. Stats.), while state agencies such as the Department of Natural Resources create and revise the rules required and authorized by those statutes. These agency rules constitute the Wisconsin Administrative Code (Wis. Adm. Code).

Public participation is a critical component of agency rulemaking and we value your involvement in the DNR's rulemaking activities. There are numerous opportunities for you to participate in the DNR rulemaking process.

Codes And Statutes

Hazardous waste administrative codes and statutes

The majority of the hazardous waste requirements in state statutes and rules reflect mandates contained in the Resource Conservation and Recovery Act and federal regulations that Wisconsin hazardous waste rules must reflect.

Current hazardous waste administrative codes (effective Sept. 1, 2020)

Hazardous waste state statutes

Proposed Universal Waste Rule

WA-12-21 Universal Waste Rulemaking

The DNR is developing universal waste rules that would allow used aerosol cans to be managed as a universal waste. This change would benefit a wide variety of facilities generating and managing hazardous waste aerosol cans by:

  • providing a clear, protective system for managing discarded aerosol cans;
  • promoting collection and recycling of these cans; and
  • encouraging development of municipal and commercial programs to reduce the quantity of aerosol cans going to municipal solid waste landfills or combustors. 

The rules would ensure clarity and consistency in waste requirements for universal waste receiving and recycling facilities or destination facilities.

Scope statement
Spring - fall 2022

  • WA-12-21 statement of scope
  • Preliminary hearing held on Sept. 28, 2022
  • Statement of Scope approved by the Natural Resources Board Oct. 26, 2022

Rule drafting/ Public feedback
Winter 2022 - winter 2023

Economic impact analysis
Comment period Jan. 30 - Feb. 13, 2024

Access the board order and EIA on the DNR’s proposed permanent rules webpage under WA-12-21.

Public hearing on proposed rule
May 8, 2024

Adopted by NRB
Sept. 25, 2024

Legislative review
Spring 2025

Rule published and effective
Summer 2025

Proposed Ignitable Liquids Rule

Wa-11-21 Modernizing Ignitable Liquids And Test Methods Rulemaking

The DNR is developing rules that would allow updated flash-point testing methods for ignitable hazardous waste determinations, including removing obsolete information in the ignitability regulation. These rules would standardize test procedures, update standards to match federal requirements, and potentially eliminate the need for outdated equipment and methodologies.

This rule would also define “aqueous” as “50% water by weight,” which would assist in narrowing the types of alcohol that would qualify as a hazardous waste, potentially reducing the applicability of these requirements to certain entities. These waste streams have low flash points but are unable to sustain combustion.

Another component of the rule would correct cross references to U.S. Department of Transportation regulations and remove obsolete information in the ignitability regulation. Specifically, the proposed rule would modify the criteria for ignitable compressed gases and oxidizers to adhere more closely to the corresponding definitions in the DOT Hazardous Materials Regulations.

Scope statement
Spring - fall 2022

  • WA-11-21 statement of scope
  • Preliminary hearing held on Sept. 28, 2022
  • Statement of Scope approved by the Natural Resources Board Oct. 26, 2022

Rule drafting/ Public feedback
Winter 2022 - winter 2023

Economic impact analysis
Comment period Jan. 30 - Feb. 13, 2024

Access the board order and EIA on the DNR’s proposed permanent rules webpage under WA-11-21.

Public hearing on proposed rule
May 8, 2024

Adopted by NRB
Sept. 25, 2024

Legislative review
Spring 2025

Rule published and effective
Summer 2025

Proposed Corrections Rule

Wa-14-21 Technical Corrections And Clarifications Rulemaking

Current state hazardous waste regulations contain spelling and grammatical errors, citation errors, and missing federal code language. The DNR is proposing this rule to update and correct state regulations, including any potential technical corrections finalized by the U.S. Environmental Protection Agency during the proposed rulemaking process. The proposed rules and revisions would correct and update current state rules that comprehensively regulate the generation, transportation, recycling, treatment, storage and disposal of hazardous and universal wastes and used oil.

Scope statement
Spring - fall 2022

  • WA-14-21 statement of scope
  • Preliminary hearing held on Sept. 28, 2022
  • Statement of Scope approved by the Natural Resources Board Oct. 26, 2022

Rule drafting/ Public feedback
Winter 2022 - winter 2023

Economic impact analysis
Comment period Jan. 30 - Feb. 13, 2024

Access the board order and EIA on the DNR’s proposed permanent rules webpage under WA-14-21.

Public hearing on proposed rule
May 8, 2024

Adopted by NRB
Sept. 25, 2024

Legislative review
Spring 2025

Rule published and effective
Summer 2025