PFAS phase-out reshapes data center liquid cooling strategies

The Environmental Protection Agency (EPA) has designated PFAS as “forever chemicals” and under TSCA has delayed but maintained reporting requirements, with the reporting deadline pushed to January 31, 2027.

• Main announcement: The EPA/TSCA reporting requirement for PFAS use affects data center operators who must report PFAS use once requirements take effect; the EPA has extended the reporting deadline to January 31, 2027 after three prior extensions. The article frames this as a compliance shift that is already halting growth in two-phase immersion cooling and encouraging migration to PFAS-free options.
• Background and details: The piece notes 3M has phased out Novec, several U.S. states (New Jersey, Maine, Massachusetts, Minnesota, Washington) have reporting or ban plans, and market data shows single-phase DTC holds a 55% market share in 2026, using a 75% water / 25% glycol coolant; Schneider Electric (with Motivair) is promoting PFAS-free single-phase DTC solutions.