374Water Inc. has successfully completed Phase 1 of its mobile AirSCWO system deployment in St. Cloud, Minnesota, and has initiated Phase 2 of the project. The company is processing biosolids under a $600,000 Waste Destruction Services contract with the City of St. Cloud, in partnership with Barr Engineering. The pilot program is scheduled to run through mid-September 2026 and targets the destruction of PFAS-laden wastes as part of an evaluation supported by the State of Minnesota's LCCMR.

Project Details and Phase 1 Results

The deployment is taking place at the City's Nutrient, Energy, and Water Recovery Facility, a site known for its innovative resource recovery practices. During Phase 1, the mobile AirSCWO system processed Class B biosolids at solids concentrations of up to 10% over a four-week period. The company reported that performance data from this phase shows positive early results consistent with previous AirSCWO campaigns, validating the technology.

Phase 2 Operations and Commercial Outlook

Building on the initial success, the field team is now one week into Phase 2, which involves processing Class A Lystek biosolids. Operations have been steady with no major challenges encountered to date. A successful pilot is expected to support Minnesota's broader assessment of AirSCWO for permanent PFAS destruction. 374Water estimates that a single mobile AirSCWO system has the potential to generate between $500,000 and $1.5 million in annual revenue per unit, depending on deployment cadence, waste stream composition, and contract structure.

Future Deployments

Beyond the current project, 374Water is actively developing additional projects to demonstrate the commercial capabilities of the AirSCWO system in a mobile configuration. The company indicated strong interest across multiple end markets. Brad Meyers, Chief Operating Officer of 374Water, stated that the deployment validates the reliability of the technology and the commercial model, noting that demand for mobile AirSCWO services is growing.

374Water has amended its License Agreement to expand its waste destruction services build-out in Orlando. The expansion focuses on increasing capacity and upgrading technology to serve industrial, municipal, and federal clients.

Under the amended agreement, 374Water will add 88,000 gallons of onsite tank storage capacity. This storage is intended for the receipt and staging of both PFAS and non-PFAS contaminated wastes. The company will also upgrade its AirSCWO system to achieve significantly higher throughput.

The project involves developing a customer-centric facility designed to support a diverse client base. Additionally, 374Water will establish manufacturing and assembly operations on-site to support system deployment and servicing.

Negotiations are ongoing with various partners to further expand the project. The company aims to more than double the capacity by integrating additional AirSCWO systems.

Key Expansion Details