374Water says company ‘destroys’ over 99.9% PFAS ‘Forever Chemicals’ in project

374Water announced the public release of U.S. government PFAS destruction test results using AirSCWO. The results come from 374Water’s participation in an official project led by the US government’s Defense Innovation Unit and the Environmental Security Technology Certification Program. Unlike conventional treatment approaches that filter or concentrate PFAS, AirSCWO permanently destroys organic contaminants. Results were evaluated by a third party and presented by Arcadis, a global leader in environmental engineering, which served as the Company’s independent project partner. “Performing technical demonstrations at scale, such as this DIU project, are essential to build trust within government agencies,” said Howard Teicher, the Company’s VP, Government. “Watching AirSCWO PFAS-contaminated waste streams, in some cases to a NON-DETECT or single-parts per trillion level, affirms that this technology is ready for operational use.” AirSCWO was evaluated with six distinct PFAS-contaminated waste streams and met or exceeded every key performance objective. Results were evaluated by a third party and presented by Arcadis, a global leader in environmental engineering, which served as the Company’s independent project partner. These wastes are the types of concentrated, hard-to-treat waste streams generated at military bases, industrial facilities, and municipal water systems nationwide. The independently validated results demonstrate that AirSCWO achieved greater than 99.9% destruction and removal efficiency across all four highly concentrated PFAS liquid waste streams, and greater than 90% DRE for solid waste streams: Allonnia SAFF40 Foam Fractionate – Total PFAS DRE of 99.9998%, with effluent concentrations at or below method detection limits across all primary analytes; Cyclopure DEXSORB Media Regenerant Still Bottoms – Aggregate PFAS DRE of 99.95%, exceeding 99.99% for PFOS, PFOA, PFHxS, and 6:2 FTS; ECT2 SORBIX RePURE IX Regenerant Still Bottoms – Aggregate PFAS DRE of 99.996%; AFFF – Aggregate PFAS DRE of 99.997%, exceeding 99.999% for PFOS, PFOA, and 6:2 FTS; Spent AIX/GAC Mixture – Over 97.5% aggregate PFAS DRE, exceeding 99.5% for PFOS and PFOA; Spent GAC – Aggregate PFAS DRE greater than 90%, exceeding 99.9% for PFOS and PFOA. All testing followed EPA Method 1633 for liquid-phase PFAS analysis, with supplemental air emissions monitoring conducted via multiple validated federal methods. Critically, hydrogen fluoride stack emissions were non-detectable across all six tests – confirming that AirSCWO fully mineralizes these highly recalcitrant fluorinated organic compounds with no hazardous air emissions.