The Trump administration’s Environmental Protection Agency (EPA) proposes a rule that would change how data centers report air pollution. According to reporting from The Guardian and the New Republic, the proposal would remove a requirement under the Clean Air Act for data centers to publicly disclose their emissions, making such disclosure voluntary depending on state and some local decisions.

Advocates warn that the change could reduce public access to information needed to assess health risks and challenge permits or pollution levels. The Guardian adds that data centers are often associated with emissions such as nitrogen oxides, which can contribute to ozone formation and other pollutants. A key concern raised in the reporting is that limited transparency would affect oversight and the ability of communities to evaluate or contest environmental impacts.

The New Republic reports that EPA’s former assistant administrator for the Office of Air and Radiation, Joe Goffman, characterizes the proposal as weakening what he views as an “ironclad promise” of public protection. The outlets also note the public comment period has ended and that the rule could face legal challenges if finalized.