6 October 2023

EPA Issues Exhaustive Requirements For Collecting Detailed Information On PFAS

Arnold & Porter


Arnold & Porter is a firm of more than 1,000 lawyers, providing sophisticated litigation and transactional capabilities, renowned regulatory experience and market-leading multidisciplinary practices in the life sciences and financial services industries. Our global reach, experience and deep knowledge allow us to work across geographic, cultural, technological and ideological borders.
Making few changes to the version proposed in June of 2021, EPA has belatedly released its final regulation that will require extensive one-time reporting by any entity that has manufactured...
United States Environment
To print this article, all you need is to be registered or login on

Making few changes to the version proposed in June of 2021, EPA has belatedly released its final regulation that will require extensive one-time reporting by any entity that has manufactured (or imported) for commercial purposes at any time since 2011 a chemical substance, mixture, or manufactured product that contained any one of potentially thousands of chemicals known as per- and polyfluoroalkyl substances (PFAS).1 Congress ordered EPA to impose such reporting requirements in a provision buried in legislation to fund military spending in the U.S. (the National Defense Authorization Act (NDAA) for Fiscal Year 2020) and to do so not later than January 1, 2023. The provision — which added Section 8(a)(7) to the Toxic Substances Control Act (TSCA) — directs EPA to promulgate a rule requiring “each person who has manufactured a chemical substance that is a [PFAS] in any year since January 1, 2011” to report certain information.2 The final rule implementing this mandate will greatly expand compliance obligations for entities subject to the rule, as well as their risks of exposure to EPA enforcement actions, especially for entities that ordinarily might not have an awareness of TSCA. This comes at a time when multiple states, such as Maine and Minnesota, are gearing up to impose their own reporting obligations on any entity that distributes PFAS-containing products in the U.S.

The final rule imposes reporting obligations on traditional manufacturers and importers of chemical substances and mixtures who are likely to be familiar with TSCA generally. Importantly, the obligations also apply to businesses not typically subject to TSCA reporting requirements, such as the thousands of entities located in the U.S. that routinely import everything from stain- and water-resistant garments to complex, highly technical products that contain many hundreds of individual component parts (such as certain mobile phones, televisions, automobiles, and even aircraft) that may be manufactured using small quantities of PFAS. Substantial sectors of the U.S. economy will need to develop an awareness of the new rule's requirements and begin making timely inquiries of their suppliers if they hope to avoid potential violations of the rule. Violations could result in penalties that exceed $45,000 per day, per violation.3

Enormous Scope of New Requirements

The scope of PFAS subject to the new reporting rule is significantly broader than for EPA's periodic TSCA Section 8(a) reporting requirements for chemical manufacturers and importers, known as the Chemical Data Reporting (CDR) rule. The final PFAS rule requires that reports be submitted by entities that currently or have previously manufactured (including imported) a chemical substance (or mixture or article) that contains PFAS between January 1, 2011 and the end of 2022. Unlike the CDR rule, the final PFAS reporting rule establishes no lower limit, or de minimis threshold, on the amount of PFAS that must be present in the material manufactured or imported during the periods covered for reporting to be required. CDR reporting also exempts many substances, such as many polymers, as well as substances present only as impurities and certain byproducts and all research and development (R&D) chemicals. Chemical substances present in imported manufactured products (referred to as “articles”) also have never been reported to EPA pursuant to the CDR rule. Not so with the final PFAS reporting rule.

The final rule excludes PFAS from reporting only if the PFAS is produced solely for use as a pesticide, or in food, food additive, drug, cosmetic, or medical device uses.4 However, the rule requires reporting on PFAS when manufactured for virtually any other use, including when present as an unintentional impurity or byproduct of manufacturing, and when imported as a component in manufactured articles. This might include articles (such as certain office machinery and manufacturing equipment) containing PFAS in many thousands of components in which numerous different PFAS could become present during manufacturing processes occurring abroad. There is no exemption offered for substances produced only in small quantities (such as certain laboratory reagents and other substances used only for R&D efforts) or for substances unintentionally present in another product or mixture.

EPA also has elected not to exempt small businesses. EPA's only gestures in recognition of the enormity of its new requirements are to provide that PFAS-containing articles importers and manufacturers of R&D substances in quantities below 10 kilograms per year will have the option to submit more streamlined reporting forms than the longer, standard form for all other PFAS manufacturers and to give small entities a longer timeframe during which to report.

The final PFAS reporting rule also will gather much more information than EPA obtains in the four-year CDR reports, including previously unreported data on health and environmental studies that pertain to PFAS.

Unknown Number of Chemical Substances Covered by Final Rule

Rather than provide a list in the final rule of the specific substances for which reporting is required, EPA has adopted a “structural definition” for PFAS intended to define the boundaries of the substances for which reporting is required.5 This leaves uncertainty on the number of substances for which reporting will be required, but, as discussed below, this is reasonably likely to be in the thousands.

EPA defends this approach by saying it has “determined that a structural definition was more appropriate for this rule than a discrete list of specifically identified substances” because “limiting the scope of reporting to a discrete list of chemicals would eliminate reporting on substances of interest to the Agency.” This is because there are “various reporting exemptions for both existing chemicals (e.g., certain byproducts and research and development (R&D) substances are exempt from reporting in the Chemical Data Reporting (CDR) rule) and new chemicals (e.g., byproducts and impurities that are not listed on the Inventory), and with minimum reporting thresholds under other rules, EPA may be unaware of some TSCA chemical substances which meet this structural definition of PFAS.” Moreover, the Agency cites as precedents other TSCA requirements that have relied on a structural definition such as the significant new use rule for long-chain perfluoroalkyl carboxylate substances6 and the polymer exemption rule for new chemical pre-manufacture notices.7

Thus, the PFAS subject to the final requirements include:

any chemical substance or mixture containing a chemical substance that structurally contains at least one of the following three sub-structures:

  1. R-(CF2)-CF(R')R'', where both the CF2 and CF moieties are saturated carbons
  2. R-CF2OCF2-R', where R and R' can either be F, O, or saturated carbons
  3. CF3C(CF3)R'R'', where R' and R”” can either be F or saturated carbons8

The structural definition in the final rule reflects edits made to the definition in the June 2021 proposal. These are detailed in the preamble to the final rule. Some of the changes noted were made to “expand the universe of PFAS to include additional substances of potential concern because they are likely to be persistent.” EPA reports that changes are intended to focus the “definition on those substances most likely to persist in the environment.” For example, the “final definition does not include substances that only have a single fluorinated carbon or unsaturated fluorinated moieties (e.g., fluorinated aromatic rings and olefins)” because “the latter set of substances are more susceptible to chemical transformation than their saturated counterparts, and therefore, are less likely to persist in the environment.” Furthermore, unlike the PFAS definition being employed in some state PFAS reporting requirements, “EPA has determined that, for the purpose of this rule, it is unnecessary to extend reporting requirements to substances that only have a single fluorinated carbon or unsaturated fluorinated moieties” as these substances are “less likely to persist in the environment.” Nevertheless, EPA made other changes to the definition to be certain to “capture certain fluorinated ethers” which “EPA believes … are likely to be found in water.” One other change was made to ensure the structural definition will “capture a different type of branching for highly fluorinated substances” that would not have the proposed definition “due to their non-adjacent fluorinated carbons.”

In spite of numerous public comments received from trade groups and chemical manufacturers recommending otherwise, EPA has affirmed that “fluoropolymers which meet this rule's definition of PFAS are reportable under this rule; this includes higher molecular weight fluoropolymers.”

EPA estimated the structural definition used in the proposed edition of the rule would have captured as many as 9,400 substances.9 Both the proposed and final definitions would still be narrower than the structural definition employed by the Organization of Economic Cooperation and Development (OECD), which EPA estimates would capture as many as 23,000 additional substances.10

“Streamlined” Reporting for Imported Articles Containing PFAS

As mentioned, EPA has declined to exempt the importers of PFAS-containing articles from the PFAS rule. EPA concluded that exempting article importers from the scope of the rule would “perpetuate data gaps in EPA's level of knowledge related to PFAS manufactured for a commercial purpose since 2011” because of the reporting exemptions for articles in other TSCA reporting rules.

EPA states that after considering comments concerned about requiring reporting on PFAS in products, the Agency “is finalizing a reporting option for article importers to provide data to EPA on a streamlined form, if they do not know or cannot reasonably ascertain information requested on the longer standard form.”

EPA explains that while this streamlined form would still request information including chemical identity, processing and use information, and production volume, “[t]he production volume requested is the volume of the imported article, rather than the PFAS” (emphasis in original). The rule explains that based on information received during the small business advocacy review (SBAR) process, “EPA believes it is more likely that an article importer is able to determine the total imported production volume of articles rather than the volume related to just the PFAS contained within the article.”

Length of Time Permitted for Compliance

EPA has extended the reporting deadline originally included in the proposed rule, which would have provided a six-month information collection period followed by a six-month reporting period following the effective date of the final rule. The final rule extends the deadline for reporting forms by at least six months from what was proposed. The final rule provides all entities, including small entities, with 18 months from the effective date of the final rule to gather and submit the requested information. For small manufacturers (as defined at 40 C.F.R. § 704.3) whose reporting obligations under the final rule are exclusively from article imports, EPA has increased the deadline for reporting forms by an additional six months. Thus, small article importers have 24 months from the effective date of the rule to submit the required information.

This provides potential reporters a year and a half following the effective date of the final rule to collect and submit all required information to the EPA. Given the complex nature of the supply chains for the manufacturers and importers of highly complicated manufactured durable goods (such as certain household appliances, office equipment, transportation equipment, and military hardware), even this extended timeframe could pose significant hurdles to compliance.

Production and Use Information and Unpublished Health and Safety Data Subject to Reporting

The Agency is requiring reporting for each site of each of the PFAS in a long list of data elements, reportable “to the extent known to or reasonably ascertainable by” the manufacturer. The information elements include:

  • Company and plant site information for each site at which a reportable chemical substance is manufactured
  • Chemical name and specific identity
  • Trade or common name
  • Representative molecular structure
  • Physical form of chemical or mixture
  • Industrial processing and use information
  • Consumer and commercial use information
  • Manufactured amounts, including production volumes
  • Whether the substance is imported for use on site or solely for distribution
  • Whether the uses are site-limited
  • Maximum quantity stored on-site at any time
  • Total volume recycled on-site
  • For byproducts produced during the manufacture, processing, use, or disposal of each PFAS, identifying information for the chemical and its releases to the environment, if any
  • Worker exposure at various sites
  • Disposal processes
  • Total volume released and incinerated on-site
  • All existing information related to health and environmental effects, using the Organization of Economic Cooperation and Development (OECD) harmonized templates11
  • Other data relevant to health and environmental effects. The scope of this final category of information is not limited to studies conducted or published since 2011

Level of Diligence Required

Manufacturers must report information “to the extent known to or reasonably ascertainable by” the submitter.12 This includes “all information in a person's possession or control, plus all information that a reasonable person similarly situated might be expected to possess, control, or know.”13 This reporting standard is the same as in other TSCA regulations, such as the CDR rule. As EPA advises,

This reporting standard requires reporting entities to evaluate their current level of knowledge of their manufactured products (including imports), as well as evaluate whether there is additional information that a reasonable person, similarly situated, would be expected to know, possess, or control. This standard carries with it an exercise of due diligence, and the information-gathering activities that may be necessary for manufacturers to achieve this reporting standard may vary from case-to-case.

EPA notes that submitters will need to “conduct a reasonable inquiry within the full scope of their organization.” Meeting the reporting standard also may entail inquiries outside the submitter's organization “to fill gaps in the submitter's knowledge.” The Agency notes in the preamble to the final rule that such “activities may, though not necessarily, include phone calls or email inquiries to upstream suppliers or downstream users or employees or other agents of the manufacturer, including persons involved in the research and development, import or production, or marketing of the PFAS.”

EPA has created additional compliance guidance related to this reporting standard, including for small entities and for article importers.14 Therefore, EPA anticipates many reporters under this rule are familiar with this reporting standard, and resources are available to support those reporters who may not be familiar with the standard. However, given that this rule applies to many entities not previously subject to TSCA reporting and given the fact-dependent nature of the reporting standard, companies will likely confront numerous questions about what constitutes a “reasonable inquiry.”

The Agency acknowledges in the proposed rule that importers of articles may lack knowledge of importing PFAS and recommends such importers “document [their] activities to support any claims [they] might need to make related to due diligence.”15

Because submitters may have reported some information required by this rule due to CDR requirements, the EPA has made certain accommodations for reporters to indicate in the reporting tool (i.e., CDX) when they previously provided such information through CDR for certain years. The manufacturer will still need to submit any other information required by the final rule.

Confidential Business Information Claims Will Be Accommodated

Similar to other TSCA reporting rules, the Agency will permit entities submitting a reporting form to claim portions of the form as confidential.16 EPA will require the submitter to substantiate its CBI claims, and certain information may not be claimed confidential, such as the specific identity of substances which are listed on the public version of the TSCA Inventory as well as most information included in a health and safety study. Similarly, a submitter may not claim as confidential a response left blank or designated as “not known or reasonably ascertainable.”

Recordkeeping Will Be Required

EPA is imposing a five-year recordkeeping period, which begins on the last date of the submission period (i.e., 18 months after the effective date of the final rule). The rule does not itself require any company to maintain information upon which a decision not to report is based.

Potential Enforcement-Related Implications

The reporting to EPA of information previously not submitted to the Agency raises the opportunity for EPA enforcement personnel to review the new information and potentially raise concerns about the information and whether it is consistent with previously reported information, or should have been submitted previously to EPA. For example, reporting information to EPA about the manufacture or import of PFAS that are not on the “active” portion of the TSCA Inventory, or are not listed on the Inventory at all, could lead to allegations that a violation of TSCA's Section 8 chemical “reactivation” requirements, or Section 5 requirements concerning “new chemical” notification, may have occurred. Submitters reporting new forms of production, use, and release information for PFAS that also have been subject to reporting for purposes of the Toxics Release Inventory rule also could raise enforcement concerns within EPA. Importantly, the requirement to provide previously unreported data and information relevant to health and environmental effects could have profound implications for submitters of existing data that heretofore has not been shared with EPA. A separate provision of TSCA (Section 8(e)) requires the immediate submission to EPA of information “which reasonably supports the conclusion that such substance or mixture presents a substantial risk of injury to health or the environment.” An entity that reports, pursuant to this new requirement, information which EPA determines qualified for “immediate” reporting previously under TSCA Section 8(e) could face exposure to stiff penalties for violations of a provision of the statute which EPA vigorously enforces.


The lengthy and complicated PFAS reporting rule will require manufacturers and importers of PFAS to devote considerable time and attention to determining their compliance obligations and devising a strategy for gathering the necessary information in a timely and accurate way, and to ensuring the information prepared is carefully reviewed in light of the collateral enforcement concerns noted above, before submission is made. The failure to do so could lead to significant consequences if EPA elects to monitor and vigorously enforce the new rule, and to exploit the information gathered for purposes of cross-checking it against information submitted (or omitted) by the same entity in the context of other TSCA regulations.

* Margaret Barry contributed to this Advisory. Margaret is employed as an Environmental Law Writer in Arnold & Porter's New York office.


1. A pre-publication notice for the final rule is available here. See also 86 Fed. Reg. 33926 (June 28, 2021) (proposed rule).

2.  15 U.S.C. § 2607(a)(7), as added by Pub. L. No. 116-92, section 7351.

3. See 15 U.S.C. §§ 2614, 2615(a)(1); 40 C.F.R. § 19.4.

4. TSCA section 3(2), 15 U.S.C. § 2602(2).

5. EPA is providing a list of substances that meet this definition; this list will be available in the CompTox Chemicals Dashboard, available here. The list is expected to contain approximately 1,462 substances meeting the final rule's definition of PFAS — an increase from the 1,364 PFAS identified for purposes of the proposed rule's definition. Nevertheless, EPA warns in the preamble to the final rule, a “substance that is not on this list but still falls under the definition of a ‘chemical substance' under TSCA … is subject to this rule if the substance has been manufactured for a commercial purpose since 2011.” The EPA-generated lists have been based on PFAS on the TSCA Inventory and all PFAS subject to TSCA Section 5 new chemicals submissions that have been previously reviewed by the Agency and permit the substances to be produced subject to certain limitations in the U.S.

6. 40 C.F.R. § 721.10536.

7. 40 C.F.R. § 723.250.

8. 40 C.F.R. § 705.3.

9. See preamble in Section III.A.1.

10. See preamble in Section IV.A.2.

11. EPA notes it intends “environmental and health effects information” to be interpreted broadly. See preamble at III.E. For example, EPA identified the following types of information as examples: toxicity information, range-finding studies, medical screening or surveillance, and adverse effects reports. Id.

12. 40 C.F.R. § 705.15.

13. 40 C.F.R. § 705.3.

14. EPA, Small Entity Compliance Guidance for the TSCA PFAS Data Call (Sept. 2023).

15. 86 Fed. Reg. 33926, 33929 (June 28, 2021).

16. 40 C.F.R. § 705.30.

The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

6 October 2023

EPA Issues Exhaustive Requirements For Collecting Detailed Information On PFAS

United States Environment


Arnold & Porter is a firm of more than 1,000 lawyers, providing sophisticated litigation and transactional capabilities, renowned regulatory experience and market-leading multidisciplinary practices in the life sciences and financial services industries. Our global reach, experience and deep knowledge allow us to work across geographic, cultural, technological and ideological borders.
See More Popular Content From

Mondaq uses cookies on this website. By using our website you agree to our use of cookies as set out in our Privacy Policy.

Learn More