374Water has published an updated investor presentation as the U.S. Environmental Protection Agency begins its first agency-wide strategy for PFAS technologies. The strategy names supercritical water oxidation (SCWO), the process used in 374Water’s AirSCWO systems, among the technologies the agency plans to advance through testing and partnerships.
The update highlights the company’s field work, customer projects and potential markets. It does not announce a new contract or financing. The EPA’s strategy signals interest in evaluating PFAS destruction technologies, but it does not itself award work to 374Water.
Key details
-
EPA strategy: Announced October 26, the EPA plan aims to accelerate PFAS treatment and destruction through funding, public-private partnerships and demonstrations at Superfund sites, military facilities, wastewater plants and drinking-water systems. The agency plans to make funding available through its STAR and SBIR programs.
-
Reported destruction results: An Army Corps of Engineers technical report, authored and validated by Arcadis, documented 99.9993% total PFAS destruction in aqueous film-forming foam (AFFF) treated with AirSCWO. The presentation also cites a Defense Innovation Unit success memo from August 2026 as opening a path to potential follow-on federal production awards. The memo is not described as an award.
-
Projects in progress or completed:
- At the City of Orlando’s Iron Bridge Water Reclamation Facility, 374Water is completing construction of a waste-destruction hub with about 88,000 gallons of on-site storage. Arcadis intends to use the facility for AFFF destruction.
- A mobile treatment campaign for the City of St. Cloud, Minnesota, was completed in September 2026 under a $600,000 contract. It processed four types of waste, including PFAS-laden spent granular activated carbon (GAC), and tracked 96 PFAS compounds.
- The company says its system for the Orange County Sanitation District in California passed factory acceptance testing in the second quarter of 2026; deployment is planned for November.
-
374Water lists an approximately $4.8 million order for equipment and operations from the City of Olathe, Kansas.
-
Business model: The company sells AirSCWO systems and provides operations, as well as fee-for-service treatment at permanent facilities and through mobile campaigns at customer sites. It says the mobile systems have the same destruction capability as installed systems and can be deployed at customer locations.
-
Potential applications: AirSCWO is designed to treat spent GAC and ion-exchange resin, materials used by utilities to capture PFAS as they work to meet the EPA’s 4-parts-per-trillion limits for PFOA and PFOS. The presentation also points to AFFF stockpiles and biosolids as potential markets. 374Water estimates roughly 10 million gallons of AFFF remain to be destroyed across sources including the military, airports and fire departments; it says phase-out deadlines fall between 2026 and 2029.
-
Biosolids market: The presentation estimates U.S. wastewater plants produce about 16,000 dry tons of biosolids daily, with land application accounting for 46% of disposal. It cites bans in Maine and Connecticut and a Virginia restriction scheduled to begin in July 2027 based on PFOS and PFOA levels, as well as regional coalitions exploring broader solutions.
What changes: The EPA’s strategy gives SCWO a place among the technologies the agency intends to test and advance, while 374Water is presenting its existing project record as evidence of readiness for that work. The near-term business picture remains tied to execution of the listed projects and orders; the strategy itself does not guarantee federal funding or future contracts.