EPA Delays Its Legacy Asbestos Rule to 2027, Seeks Exposure Data

The Environmental Protection Agency is giving itself another year to write the rules that would manage the risks of legacy asbestos, the asbestos already sitting in millions of older buildings. On June 23, 2026, the agency said it will propose its Part 2 asbestos risk management rule by June 3, 2027, and it reopened a step to collect real-world exposure data first.

The move affects the second and broader half of the EPA’s asbestos work. Part 1, finalized in 2024, banned the ongoing uses of chrysotile, the only form of asbestos still imported into the country. Part 2 reaches much further, into the asbestos left behind in buildings, ships, and products across decades of past use.

What the EPA Announced

The agency published a notice saying it wants more information before it proposes the Part 2 rule. It opened a docket, EPA-HQ-OPPT-2025-0036, and set a comment deadline of August 24, 2026. The docket entry, posted on June 23, 2026, is a short memo that opens the record for public comment.

The EPA says it is asking for specific, practical data. It wants information on activities that disturb asbestos-containing materials, including work by self-employed people, on the use of legacy products such as construction materials, and on air-sampling methods and laboratory capacity. The agency says those details will sharpen its exposure and economic analyses, clarifying who is exposed, how often, and under what conditions.

To reset the timeline, the EPA is using a provision of the Toxic Substances Control Act, section 6(c)(1)(C), that lets it adjust the deadline for proposing a rule when it needs more information. The agency frames the extra year as a way to build a rule that holds up if industry or advocates challenge it in court.

What “Legacy Asbestos” Means, and What Part 2 Covers

Legacy uses are uses where manufacturing, processing, and distribution have already ended, but where the material can still be present and disturbed. The EPA points to floor and ceiling tiles, pipe wraps, insulation, and heat-protective textiles as common examples.

Part 2 is wider than the chrysotile rule in another way. It covers six asbestos fiber types, chrysotile, crocidolite, amosite, anthophyllite, tremolite, and actinolite, along with Libby Amphibole Asbestos. The evaluation also assessed asbestos-containing talc, which has been implicated as a source of asbestos exposure.

The scope traces back to a court order. In November 2019, the Ninth Circuit ruled in Safer Chemicals, Healthy Families v. EPA that the agency had wrongly left legacy uses and their disposal out of its asbestos review, which forced the supplemental evaluation that became Part 2.

How Part 2 Differs From the 2024 Chrysotile Ban

The 2024 Part 1 rule banned ongoing chrysotile uses and is a finished regulation, though industry petitioners are challenging it at the Fifth Circuit, where a decision is pending. Part 2 is not a rule yet. It is a risk finding that still needs a management rule, and that rule is what the EPA has now pushed to 2027.

The EPA finalized the Part 2 risk evaluation in December 2024 and concluded that disturbing and handling legacy asbestos poses an unreasonable risk to human health. Under the Toxic Substances Control Act, a final unreasonable-risk finding starts a clock for the agency to propose management rules, which is the deadline the EPA is now adjusting.

Why the Timing Is Contested

The Asbestos Disease Awareness Organization, a patient-advocacy group, opposes the delay. According to the group, it filed a 60-day notice of intent to sue in February 2026, then a citizen suit in federal court in April 2026 to compel the agency to act after the EPA missed its statutory deadline. The group estimates that more than 40,000 Americans die each year from asbestos-related diseases.

The organization’s core argument is that asbestos does not become safe because a product has aged or because no one makes it anymore. Education and cleanup can lower exposures, the group says, but neither removes the material already in homes, schools, and workplaces.

What It Means for People Tracing Exposure

For now, nothing about the legal status of asbestos in older buildings changes. The EPA’s own guidance holds that asbestos left undisturbed in insulation does not present a risk to the people living or working nearby. The risk arises when the material is cut, sanded, or broken during renovation, demolition, or repair.

The delay does mean that federal management rules for legacy asbestos, the exposure route most relevant to people diagnosed with mesothelioma today, remain a proposal for the future rather than a rule on the books. The August comment window is the next point where workers, building owners, states, and communities can add their own exposure data to the record.