EPA Urged to Reject New Pfas Cooling Chemical for Data Centers 2026

A coalition of 17 environmental groups is demanding the Environmental Protection Agency reject a new Pfas chemical, Opteon 2P50, that Chemours is fast-tracking for use in cooling data centers. The groups, led by Earthjustice, filed formal comments accusing Chemours of using bad science to downplay the chemical's toxicity and climate risks. Approving the application as written would violate federal law, according to the legal nonprofit.

Why This Pfas Chemical Matters for Data Centers

Data centers require massive cooling to prevent servers from overheating. Traditional water-based cooling consumes enormous volumes of water, sparking opposition from communities facing drought. Tech giants like Google have promoted two-phase cooling systems as a water-saving alternative, but these systems often rely on Pfas gases. Opteon 2P50 is one such gas that Chemours claims is safe and climate-friendly—but environmental advocates strongly disagree.

The Hidden Danger of Forever Chemicals

Pfas, or per- and polyfluoroalkyl substances, are known as “forever chemicals” because they do not break down naturally. They accumulate in the human body and the environment, linked to cancer, liver disease, kidney problems, and other serious health issues. The new chemical Opteon 2P50 may be even more toxic than Chemours suggests, according to the coalition.

Comparison: Water Cooling vs. Pfas Gas Cooling

“The data center industry knows it is under fire for its enormous use of water, so they cast themselves as the good guys by using alternative cooling,” said Lenny Siegel, director of the non-profit Chips Communities United. “But they’re not telling the public that they’re using hazardous chemicals. Some are toxic, some are greenhouse gases, and some are both.”

Key Takeaways on the Pfas Data Center Controversy

• 17 environmental groups formally oppose Chemours’ application for Opteon 2P50
• The chemical is a Pfas “forever chemical” that persists in the environment
• Approval would be the first under Trump’s executive order for fast-tracked data center chemicals
• Opteon 2P50 may be more toxic and more harmful to the climate than Chemours claims
• Big tech faces backlash for both water usage and now toxic chemical alternatives

What This Means for Communities and Regulation

The EPA is under pressure to scrutinize the application using rigorous science. Earthjustice has warned that approving the chemical without proper review would violate environmental laws. Meanwhile, communities near proposed data centers are fighting back, demanding transparency about the chemicals used in cooling towers.

As the demand for data centers grows—driven by AI, cloud computing, and streaming—the choice between water scarcity and toxic forever chemicals becomes a critical policy issue. The outcome of this EPA decision could set a precedent for how the industry manages its environmental footprint.

FAQ

As the EPA reviews Chemours’ application, the debate over Pfas in data center cooling underscores a broader conflict between technological progress and public health. Stay updated on this developing story and learn how you can support safer, more sustainable alternatives.