374Water's AirSCWO System Achieves Commercial-Scale Destruction Of PFAS In Biosolids To Non-Detectable Levels

Commercial-Scale AirSCWO System Consistently Destroys PFAS in Biosolids to Non-Detectable Levels

Disposal of PFAS Contaminated Biosolids from Wastewater Treatment Plants is Growing Nationwide Issue

DURHAM, N.C., July 31, 2025 (GLOBE NEWSWIRE) -- 374Water Inc. (NASDAQ:SCWO) ("374Water") (the "Company"), a global leader in organic waste destruction technology and services for the municipal, federal, and industrial markets, today announced the successful waste destruction of PFAS in biosolids utilizing our commercial-scale AirSCWO system. These waste destruction results showcase the effectiveness of our AirSCWO technology to destroy one of the hardest, most problematic waste streams containing toxic "forever chemicals", producing effluent with PFAS concentrations at non-detectable levels.

Biosolids are the organic materials that remain after effluent has been treated at a wastewater treatment plant. Biosolids are a necessary byproduct of wastewater treatment, but growing concerns over toxins, environmental impact, and limited disposal options have turned biosolid management into a pressing national issue.

Especially concerning are per- and polyfluoroalkyl ("PFAS") contaminated wastes. PFAS "forever chemicals" are a group of thousands of synthetic chemicals which are persistent and hazardous. Toxic PFAS are found in many everyday products that are included in the wastewater stream from homes and businesses. When biosolids are disposed of via land application, PFAS can contaminate soil, crops, groundwater, and livestock, creating major public health and environmental risks. States and municipalities are beginning to limit the amount of waste that can be disposed of via land application, landfills are accepting less of this form of waste, and transportation costs and disposal fees are also increasing as disposal options become more limited. Wastewater treatment facilities are now increasingly looking to innovative waste destruction technologies, such as our AirSCWO system, to fully eliminate and destroy PFAS contaminated biosolids resulting from treatment in wastewater facilities and eliminate the need for further downstream processing.