EPA Proposes Rolling Back Coal Plant Wastewater Standards for AI Power Demands

The Environmental Protection Agency proposed a rollback of wastewater standards for coal-fired power plants on May 14, 2026, seeking to rescind effluent limitation guidelines established under the Biden administration in 2024. Those rules set stringent limits on the discharge of toxic metals—including arsenic, mercury, selenium, and nickel—into waterways and required plant owners to treat contaminated groundwater before it entered streams and rivers. The Trump administration argued the regulations are unduly costly, overly restrictive, and have contributed to plant shutdowns during a period of spiking energy demand. EPA Administrator Lee Zeldin stated the rollback is necessary to make electricity more affordable and reliable, particularly to meet the surging power demands of artificial intelligence data centers. The agency estimates the move could reduce annual electricity generation costs by up to $1.1 billion by replacing one-size-fits-all discharge limits with case-by-case permits. Environmental advocacy group Earthjustice condemned the proposal, arguing it eliminates safeguards on millions of pounds of neurotoxins and cancer-causing contaminants that threaten drinking water sources. Earthjustice attorney Thom Cmar criticized the plan for favoring corporate polluters over public health. The proposal marks a significant shift in federal policy, prioritizing grid reliability and fossil fuel production over the stricter environmental protections enacted under the previous administration.