Three separate EPA actions in mid-2026 together remove most federal environmental oversight of the data center buildout. They are at different stages, and the difference matters.
Proposed: a rule change removing the Clean Air Act requirement that data centers publicly disclose their air pollution. Under the proposal, disclosure becomes voluntary at the discretion of state and some local officials. The proposal removes the transparency and public-participation requirements for “minor source” pollution, the category that covers most data centers. Comments were due August 21, 2026. By late August, reporting indicated the EPA was moving to drop the public-notice requirement.
Announced: EPA Administrator Lee Zeldin said the agency will not establish nationwide environmental requirements for the data center industry, leaving water use, cooling system design and air quality decisions to individual states and communities.
Announced: the administration exempted power plants that serve only data centers, and do not connect to the broader grid, from the pollution limits designed to prevent acid rain.
The practical objection is about who is left holding the decision. Many state and local governments have business agreements with data center operators, having competed to attract them with tax incentives. Handing those same governments discretion over whether the facilities disclose their pollution puts the disclosure decision with parties that have a financial stake in the answer. The Sierra Club, which opposes the proposal, argues this would end most data center pollution disclosure nationwide.