374Water Completes $600,000 Waste Destruction Services in St. Cloud, MN
Completion of a $600,000, four-phase PFAS waste campaign may help 374Water build a recurring mobile services business and win follow-on work.
Rhea-AI Summary
374Water (SCWO) has completed a four-phase, multi-feedstock mobile AirSCWO waste destruction campaign in St. Cloud, Minnesota under a $600,000 Waste Destruction Services contract with the City of St. Cloud and Barr Engineering.
From June through September, the field team processed four distinct PFAS‑laden feedstocks, including Class A and Class B biosolids, pre‑digestion sludge, and Class B biosolids blended with spent granular activated carbon, with no operational issues reported. The deployment emphasized detailed mass and energy balances and, with support from the University of St. Thomas, targeted detection of 96 PFAS species, more than twice those measured under EPA Method 1633. Performance samples are being analyzed, and the company expects to release detailed PFAS destruction results in the coming weeks. 374Water is also in discussions regarding a potential follow‑on industrial deployment and sees the campaign as a foundation for a scalable, recurring mobile services business.
Positive
- $600,000 Waste Destruction Services contract completed for St. Cloud mobile AirSCWO campaign
- Four distinct PFAS‑laden feedstocks processed with no reported operational issues across all phases
- PFAS analysis targets 96 species, more than twice those in EPA Method 1633
- Company estimates mobile AirSCWO units have potential to generate $500,000–$1.5 million in annual revenue per unit
Negative
- None.
News Explained
The St. Cloud campaign is complete, but PFAS destruction results remain pending; beyond the
Key Figures
- WDS contract
- $600,000
- City of St. Cloud mobile deployment
- Campaign phases
- 4 phases
- Four-phase, multi-feedstock campaign completed
- PFAS species analyzed
- 96 PFAS species
- Targeted detection and quantification effort
- Annual revenue potential
- $500,000-$1.5 million per unit
- Estimated annual revenue depending on deployment and contract conditions
Historical Context
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Phase 3 completed under the same $600,000 St. Cloud contract; Phase 4 began.
24h Move is the share-price change in the day after each event; other market factors may also have contributed.
Key Terms
pfas technical
supercritical water oxidation technical
granular activated carbon technical
epa method 1633 regulatory
AI-generated analysis. How Rhea-AI works. Not financial advice.
Four-phase, multi-feedstock campaign concludes; PFAS destruction results to be analyzed and released in the coming weeks
MORRISVILLE, NC / ACCESS Newswire / September 15, 2026 / 374Water Inc. (NASDAQ:SCWO) ("374Water" or the "Company"), a leading cleantech and environmental services company deploying supercritical water oxidation technology for the destruction of PFAS and other organic waste streams, today announced the completion of its mobile AirSCWO contract in St. Cloud, Minnesota. This concludes a four-phase, multi-feedstock campaign. The Company is preparing for final revenue milestones and is awaiting performance data and expects to release results in the coming weeks.
The St. Cloud deployment was conducted under a
All Four Phases Complete: Four Distinct Feedstocks Successfully Processed
From June through September, the field team successfully processed four distinct feedstocks - Class B biosolids, Class A biosolids, pre-digestion sludge, and Class B biosolids blended with spent granular activated carbon ("GAC") - under a range of operating conditions. Each phase concluded with no operational issues, demonstrating the reliability and versatility of the mobile AirSCWO system across a diverse set of PFAS-laden waste streams.
The campaign produced a robust performance dataset spanning multiple feedstocks and operating conditions, consistent with what the Company has observed in previous campaigns. The samples are being analyzed, and the Company expects to release detailed PFAS destruction results in the coming weeks.
"What made this deployment unique was the emphasis on robust mass and energy balances around our mobile unit, and optimization of the sampling intervals to account for dynamics of the system. Thanks to our partner University of St. Thomas for helping us raise the bar on instrument accuracy, and for their push to detect and quantify the fate of 96 PFAS species, which is more than twice the number of species currently measured via EPA Method 1633," said Raj Melkote, Chief Technology Officer at 374Water.
Phase 4 Complete: Class B Biosolids Blended with Spent GAC
In its final phase, the field team treated Class B biosolids blended with spent GAC from a drinking water purification plant in Cottage Grove, MN. GAC is among the most widely used media for capturing PFAS from drinking water plants and spent, PFAS-laden GAC is a growing disposal challenge. Processing this blended stream demonstrated AirSCWO's ability to handle complex, mixed waste feedstocks in a single system.
AirSCWO's ability to effectively process solids is a significant market differentiator, and doing so with blended waste stream expands our value proposition. This ability underscores the breadth of the technology's commercial applicability.
Commercial Potential and Follow-On Opportunity
The project supports the State of Minnesota's broader assessment of AirSCWO for permanent PFAS destruction - an outcome the Company believes could generate multiple millions of dollars in revenue, including recurring annual revenue from ongoing operations and services. The mobile AirSCWO system is estimated to have the potential to generate between
Beyond the St. Cloud project, 374Water's solutions team continues to develop follow-on mobile deployments. The Company is currently in discussions regarding a potential follow-on deployment of the mobile AirSCWO system at a prominent industrial project following completion of the Minnesota campaign. These ongoing discussions may provide an opportunity to demonstrate the mobile system in an industrial setting and further validate the commercial applicability of AirSCWO across a broader range of waste streams and end markets. The Company is encouraged by the demand it is seeing across multiple end markets and believes the St. Cloud campaign builds a foundation for a scalable, recurring mobile services business.
"Completing all four phases of this deployment - across four very different feedstocks and with no operational issues - is a significant accomplishment for our team and our partners," said Brad Meyers, Chief Operating Officer of 374Water. "The mobile system performed just as we hoped throughout the campaign. With field operations now wrapped up, our focus turns to analyzing the data, and we look forward to sharing the PFAS destruction results in the coming weeks. I am grateful to the City of St. Cloud, Barr Engineering, the University of St. Thomas, and the State of Minnesota for their support and participation throughout this effort."
374Water will continue to provide updates on the St. Cloud pilot program, campaign performance results, and the development of follow-on mobile deployments as they become available.
About 374Water
374Water Inc. (NASDAQ:SCWO) is a cleantech and environmental services company deploying supercritical water oxidation technology for the destruction of organic waste streams within the industrial, municipal, and federal markets. 374Water's AirSCWO technology is designed to efficiently destroy and mineralize a broad spectrum of nonhazardous and hazardous organic wastes, producing safe dischargeable water streams, safe mineral effluent, safe vent gas, and recoverable heat energy. 374Water's AirSCWO technology has the potential to assist its customers to meet discharge requirements, reduce or eliminate disposal costs, remove bottlenecks, and reduce litigation and other risks. 374Water continues to be a leader in innovative waste treatment solutions, dedicated to creating a greener future and eradicating harmful pollutants. Learn more by visiting www.374water.com and follow us on LinkedIn.
Forward-Looking Statements
Certain statements in this communication are "forward-looking statements" within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995, as amended. Words such as "anticipate," "believe," "confidence," "could," "design," "estimate," "expect," "intend," "may," "plan," "predict," "project," "potential," or other comparable terminology are intended to identify forward-looking statements. 374Water has based these forward-looking statements on its current expectations, assumptions, estimates, beliefs, and projections. While 374Water believes these expectations, assumptions, estimates, and projections are reasonable, such forward-looking statements are only predictions and involve known and unknown risks and uncertainties, many of which involve factors or circumstances that are beyond the 374Water's control. These forward-looking statements are subject to risks and uncertainties, including those discussed under "Risk Factors" in 374Water's Form 10-K for the year ended December 31, 2025, and in 374Water's subsequent filings and reports with the SEC. The forward-looking statements herein are made only as of the date they were first issued, and unless otherwise required by laws, 374Water disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events, or otherwise.
Investor Relations Contact
Belton Copp
Vice President
Direct: 401-419-1545
Belton.Copp@374water.com
www.374Water.com
SOURCE: 374Water Inc.
View the original press release on ACCESS Newswire
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What types of PFAS-laden waste streams were treated during the St. Cloud campaign?
The campaign processed four distinct feedstocks: Class B biosolids, Class A biosolids, pre‑digestion sludge, and Class B biosolids blended with spent granular activated carbon (GAC) from a drinking water purification plant in Cottage Grove, Minnesota.
Who were the key partners and funding supporters for the St. Cloud deployment?
The deployment was conducted with the City of St. Cloud under a Waste Destruction Services contract, in partnership with Barr Engineering. It forms part of the State of Minnesota’s evaluation of AirSCWO technology, supported by the Legislative‑Citizen Commission on Minnesota Resources (LCCMR) and the State’s Environment and Natural Resources Trust Fund (ENRTF). The University of St. Thomas supported instrument accuracy and PFAS detection work.
When will detailed PFAS destruction results from the St. Cloud project be available?
Performance samples from the St. Cloud campaign are being analyzed, and the company expects to release detailed PFAS destruction results in the coming weeks.
What follow-on opportunities is 374Water pursuing after the Minnesota campaign?
374Water’s solutions team is developing additional mobile deployments and is in discussions regarding a potential follow‑on deployment of the mobile AirSCWO system at a prominent industrial project. The company believes these discussions may allow demonstration in an industrial setting and further validation of AirSCWO’s commercial applicability across broader waste streams and end markets.