An official website of the United States government.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Toxics Release Inventory (TRI) Program

Toxics Release Inventory Laws and Regulatory Activities

Laws and Executive Orders

Image of U.S. Capitol Building

  • Code of Federal Regulations (CFR): The CFR is the codification of rules published in the Federal Register by the executive departments and agencies of the federal government. It is divided into 50 titles that represent broad areas subject to federal regulation, with environmental regulations contained mainly in title 40.

Recent/Ongoing Rulemakings

The TRI Program is modified over time through rulemakings. The most recent are listed below. Note that all rules published in the Federal Register by the TRI Program are also found in the Code of Federal Regulations. TRI regulations can be found at 40 CFR Part 372.

  • Addition of NPEs Category (Finalized in June 2018): EPA  finalized a rule that adds a category of 13 specific nonylphenol ethoxylates (NPEs) to the list of chemicals subject to TRI reporting. NPEs are nonionic surfactants used in adhesives, wetting agents, emulsifiers, stabilizers, dispersants, defoamers, cleaners, paints, and coatings.
  • Adoption of 2017 North American Industry Classification System (NAICS) Codes for TRI Reporting (Finalized in December 2017): EPA issued a final rule to update the NAICS codes used to classify facilities subject to reporting under Section 313 of the Emergency Planning and Community Right-to-Know Act (EPCRA).
  • Addition of Natural Gas Processing Facilities to List of Covered Sectors (Proposed in January 2017): EPA proposed a rule that would add natural gas processing facilities to the scope of the industrial sectors covered by the TRI Program. This rule proposes to expand coverage to all natural gas processing facilities, which receive and refine natural gas. Natural gas processing facilities that primarily recover sulfur from natural gas are already covered by TRI. Facilities primarily engaged in natural gas extraction (e.g., exploration, fracking, etc.) are not included in this proposal.
  • Addition of Hexabromocyclododecane (HBCD) Category (Finalized in November 2016): EPA published a final rule to add a ;Hexabromocyclododecane (HBCD) category to the list of chemicals subject to TRI reporting. HBCD presents potential human health concerns for developmental and reproductive effects, is highly toxic to aquatic and land-dwelling organisms, bioaccumulates, and is persistent in the environment.
  • Addition of 1-Bromopropane (Finalized in November 2015): EPA published a final rule to add 1-bromopropane to the list of chemicals subject to TRI reporting. The National Toxicology Program classifies 1-brompropane as "reasonably anticipated to be a human carcinogen."

Past Rulemakings

TRI rulemakings are grouped below based on whether they are related to chemicals, industry sectors or other changes in TRI reporting requirements. 

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.

Related to Toxic Chemicals Covered by TRI


Addition of 1-Bromopropane

Addition of Certain Chemicals

Addition of National Toxicology Program Carcinogens


Chromite Ore from the Transvaal Region of South Africa

Deletion of Certain Chemicals

Diisononyl Phthalate Category

Dioxin and Dioxin-Like Compounds Toxic Equivalency Reporting Rule

Ethylene Glycol Monobutyl Ether

Hydrochloric Acid

Hydrogen Sulfide

Lead and Lead Compounds; Lowering of Reporting Thresholds

Methyl Isobutyl Ketone

Methyl Ethyl Ketone

Nonylphenol Category


Persistent Bioaccumulative Toxic (PBT) Chemicals;
Lowering of Reporting Thresholds for Certain PBT Chemicals;
Addition of Certain PBT Chemicals

Related to Industry Sectors Covered by TRI

Addition of Natural Gas Processing Facilities to List of Covered Sectors

Addition of Facilities in Certain Industry Sectors

Adoption of 2012 North American Industry Classification System (NAICS) Codes for TRI Reporting

Adoption of 2017 North American Industry Classification System (NAICS) Codes for TRI Reporting

Toxic Chemical Release Reporting Using North American Industry Classification System (NAICS)

TRI Metal Mining Information

Related to Other Changes in TRI Reporting Requirements

Articles Exemption Clarification Proposed Rule

Note: This rule was withdrawn in 2011.

Electronic Reporting of Toxics Release Inventory Data

Overburden Exemption

TRI Burden Reduction Rule

Note: The Omnibus Appropriations Act of 2009 reverts the TRI reporting requirements to those prior to this rule. This rule is no longer in effect.

TRI Reporting in Indian Country

TRI Reporting Forms Modification Rule

Toxics Release Inventory Form A Eligibility Revisions
Implementing the 2009 Omnibus Appropriations Act


Any person may petition EPA to add a chemical to or remove a chemical from the TRI list. Additionally, under the Administrative Procedure Act (APA), federal agencies must give interested persons the right to petition for the issuance, amendment, or repeal of a rule, which allows interested persons to solicit changes to the reporting requirements for TRI. 5 U.S.C. § 553(e).

Current petitions being considered by the TRI Program:

Information Collection Requests (ICRs)

An ICR is a set of documents that describe reporting, record keeping, survey or other information collection requirements imposed on the public by EPA. The ICR provides an overview of the collection and estimates the cost and time for the public to respond. The public may view an ICR and submit comments on it at any time. TRI ICRs are resubmitted for approval by the Office of Management and Budget (OMB) every 2-3 years.

2017 TRI ICR Renewals

2014 TRI ICR Renewals

2011 TRI ICR Renewals