Formaldehyde Breaks Free from the Shackles of IRIS

Formaldehyde Breaks Free from the Shackles of IRIS

In the final days of the Biden Administration, the EPA locked in a formaldehyde risk evaluation built on the Agency’s long-controversial IRIS assessment—only for the next EPA to do something genuinely unexpected. Rather than tweak the rule and keep IRIS at the center, the Agency recalculated key benchmarks using alternative science, signaling a potential turning point in how chemical risks get judged. If that shift holds, it could loosen IRIS’s …