U.S. coal-burning power plants released more mercury into the air in 2025, ending a multi-year decline in emissions [1].
The increase in this potent toxin marks a reversal of previous environmental gains and raises concerns about the long-term contamination of air and water supplies.
According to reports, the surge in emissions follows a decision by the Environmental Protection Agency to weaken the Mercury and Air Toxics Standards [2]. This policy shift occurred under the Trump administration, which eased the federal limits on how much mercury coal plants are permitted to emit [2], [3].
Mercury is a neurotoxin that accumulates in the environment, particularly in aquatic ecosystems. Once released into the atmosphere, it can settle into water bodies where it enters the food chain. This process often impacts local communities that rely on fishing for sustenance.
Charlene Alden said the men in her family like to go fishing and cook the catch immediately because it is fresh [4].
The rollback of these standards represents a significant shift in federal oversight of industrial pollution. By reducing the restrictions on coal plants, the administration has allowed a rebound in the use of coal, and the subsequent release of associated toxins, across the country [1].
Environmental advocates have previously pointed to the Mercury and Air Toxics Standards as a critical tool for protecting public health. The current trend suggests that the easing of these regulations has had an immediate impact on the volume of pollutants entering the atmosphere [3].
“U.S. coal-burning power plants released more mercury into the air in 2025”
The rise in mercury emissions indicates a direct correlation between regulatory deregulation and environmental quality. By easing the Mercury and Air Toxics Standards, the U.S. government has prioritized the operational flexibility of coal-fired power plants over the strict emission caps that had previously driven a decline in toxins. This reversal may lead to increased bioaccumulation of mercury in fish and wildlife, potentially impacting public health in regions dependent on local waterways.
