374Water (NASDAQ:SCWO) reported completion of Phase 2 of its mobile AirSCWO deployment at the City of St. Cloud, Minnesota, under a $600,000 Waste Destruction Services contract, and the start of Phase 3. The State of Minnesota is using this campaign, supported by LCCMR and ENRTF, to evaluate AirSCWO for permanent PFAS destruction.
Phase 2 processed Class A biosolids from a Lystek thermal hydrolysis process, including a strong run at up to 12% solids, with all planned sampling completed and performance described as consistent with previous AirSCWO campaigns. Phase 3 has begun on pre-anaerobic digestion sludge, a waste stream previously processed by the company with 97% solids reduction and up to 99.99%+ PFAS reduction in earlier campaigns. According to 374Water, each mobile AirSCWO unit is estimated to have the potential to generate $500,000–$1.5 million in annual revenue, depending on deployment cadence, waste composition, and contract structure, and the St. Cloud project is intended to help build a scalable, recurring mobile services business.
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Positive
$600,000 Waste Destruction Services contract for St. Cloud deployment
Phase 2 completed processing Class A biosolids at up to 12% solids
Prior AirSCWO campaigns achieved 97% solids reduction and up to 99.99%+ PFAS reduction
Phase 3 started on pre-anaerobic digestion sludge at St. Cloud
Estimated mobile AirSCWO unit revenue potential of $500,000–$1.5 million annually
Negative
None.
Market Context
An effective S-3/A shelf dated 2025-12-12 and expiring 2028-12-12 adds financing context to the Phas...
Analysis
An effective S-3/A shelf dated 2025-12-12 and expiring 2028-12-12 adds financing context to the Phase 2 milestone. Watch Phase 3 performance results and follow-on deployment disclosures; issuance terms remain a risk factor.
Key Figures
WDS contract:$600,000Solids concentration:12%Solids reduction:97%+3 more
6 metrics
WDS contract$600,000City of St. Cloud deployment
Solids concentration12%Phase 2 Class A biosolids campaign
Phase 1 completion and Phase 2 launch under St. Cloud mobile deployment contract
24h Move is the share-price change in the day after each event; other market factors may also have contributed.
Pattern Detected
The tag-specific prior St. Cloud update was followed by a 1.06% gain, aligned with the current operationally positive announcement.
Key Terms
supercritical water oxidation, PFAS, thermochemical hydrolysis, anaerobic digestion
4 terms
supercritical water oxidationtechnical
"deploying supercritical water oxidation technology for the permanent destruction"
Supercritical water oxidation is a process that uses extremely hot and pressurized water to break down waste materials into harmless substances, such as carbon dioxide and water. It is considered an efficient and environmentally friendly method for treating hazardous waste streams. For investors, advancements or increased adoption of this technology can signal growth opportunities in waste management and environmental services sectors.
PFAStechnical
"evaluation of AirSCWO technology for the destruction of PFAS-laden wastes"
PFAS are a group of human-made chemicals used in many everyday products, such as non-stick cookware, water-repellent clothing, and food packaging, because they resist heat, water, and grease. They are often called "forever chemicals" because they do not break down easily in the environment or the human body, potentially leading to health concerns. For investors, the presence of PFAS-related risks can impact companies’ reputations, legal liabilities, and future costs.
thermochemical hydrolysistechnical
"Class A Thermochemical Hydrolyzed Biosolids"
Thermochemical hydrolysis is a chemical process that uses heat and reactive chemicals to break complex organic materials—like biomass, sludge, or polymers—into simpler molecules such as sugars, acids, or gases. Think of it as using heat and a chemical helper to speed up and force apart tough biological or chemical chains, making them easier to convert into fuels, chemicals, or to treat as waste. Investors care because the technique affects product yields, operating costs, capital intensity, and regulatory or environmental outcomes tied to projects that convert or dispose of organic feedstocks.
Anaerobic digestion is a process where microorganisms break down organic material—such as food waste, agricultural residues, or sewage—in sealed, oxygen-free tanks to produce biogas (mainly methane) and a nutrient-rich digestate. For investors, it is a renewable-energy and waste-management technology that can create steady revenue streams from sold energy, heat, or renewable credits and yield valuable fertilizer byproducts, much like turning a waste pile into a small power plant and soil-amendment business.
Successful Class A biosolids campaign advances the State of Minnesota's evaluation of AirSCWO for permanent PFAS destruction
MORRISVILLE, NC / ACCESS Newswire / July 28, 2026 / 374Water Inc. (NASDAQ:SCWO) ("374Water" or the "Company"), a leading cleantech and environmental services company deploying supercritical water oxidation technology for the permanent destruction of organic waste through its proprietary AirSCWO™, today announced the completion of Phase 2 of its mobile AirSCWO deployment in St. Cloud, Minnesota, and provided an update on the campaign as the field team begins Phase 3.
The St. Cloud deployment is being conducted under a $600,000 Waste Destruction Services ("WDS") contract with the City of St. Cloud, in partnership with Barr Engineering Co. ("Barr"), at the City's Nutrient, Energy, and Water Recovery Facility. The campaign is part of the State of Minnesota's evaluation of AirSCWO technology for the destruction of PFAS-laden wastes, supported by the Legislative-Citizen Commission on Minnesota Resources ("LCCMR") and the State's Environment and Natural Resources Trust Fund ("ENRTF").
Phase 2 Complete: Class A Thermochemical Hydrolyzed Biosolids
The mobile AirSCWO system has successfully completed Phase 2 of the St. Cloud deployment, a processing campaign targeting Class A biosolids from a low-temperature thermal hydrolysis process provided by Lystek International, that concluded with a strong run at solids concentrations of up to 12%. The field team completed all planned sampling. The Company is analyzing Phase 2 performance data and is seeing positive results consistent with previous AirSCWO campaigns.
Phase 3 Begins: Pre-Anaerobic Digested Sludge
Building on the completion of Phase 2, 374Water's field team has begun Phase 3 processing pre-anaerobic digestion ("pre-AD") sludge.This untreated waste stream is similar to material the Company has processed very successfully at its operations in Orlando, Florida, and its inclusion in the St. Cloud campaign is intended to showcase both the solids reduction of 97% and PFAS reduction of up to 99.99%+ as seen in previous campaigns. To date, the deployment has seen multiple types of biosolids successfully processed, with additional waste streams to follow as the project advances.
Commercial Potential and Follow-On Opportunity
A successful pilot is expected to support 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 $500,000 and $1.5 million in annual revenue per unit, depending on deployment cadence, waste stream composition, and contract structure.
Beyond the St. Cloud project, 374Water's solutions team continues to develop follow-on mobile deployments designed to demonstrate the full commercial capabilities of AirSCWO in a mobile configuration. The Company is encouraged by the demand it is seeing across multiple end markets and believes the St. Cloud campaign is building a foundation for a scalable, recurring mobile services business.
"Success is in our Company's DNA. We have now completed Phase 2 with performance at 12% solids, which we don't see from our competition. Our confidence in our commercial systems increases with every milestone and we continue to differentiate ourselves," said Brad Meyers, Chief Operating Officer of 374Water. "Our team has delivered steady, professional performance from day one, and our partners at Barr, the University of St. Thomas, MnTAP, and the City of St. Cloud have been outstanding collaborators throughout. As we move into Phase 3 and take on untreated pre-anaerobic sludge - a waste stream we've already processed very successfully in Orlando - we're continuing to prove that mobile AirSCWO can go where the problem exists and perform. This campaign is reinforcing what we're hearing from the market: demand for mobile AirSCWO services is real and growing, and we believe it is opening the door to a meaningful, recurring opportunity with the State of Minnesota and beyond."
374Water will continue to provide updates on the St. Cloud pilot program, Phase 3 performance results, and the development of follow-on mobile deployments as they become available.
About 374Water
374Water Inc. (NASDAQ:SCWO) is a cleantech environmental services company providing innovative solutions addressing wastewater treatment and waste management issues 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. 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 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.
What did 374Water (NASDAQ:SCWO) announce about the St. Cloud, MN AirSCWO project on July 28, 2026?
374Water announced completion of Phase 2 and the start of Phase 3 of its mobile AirSCWO deployment in St. Cloud. According to 374Water, the project is under a $600,000 services contract and supports Minnesota’s evaluation of AirSCWO for permanent PFAS destruction.
What were the key results from Phase 2 of 374Water’s St. Cloud AirSCWO deployment (SCWO)?
Phase 2 successfully processed Class A biosolids from a Lystek thermal hydrolysis process, including up to 12% solids. According to 374Water, all planned sampling was completed and performance data so far aligns with results seen in previous AirSCWO campaigns.
What is being tested in Phase 3 of 374Water’s mobile AirSCWO pilot in St. Cloud for SCWO stock investors?
Phase 3 is processing pre-anaerobic digestion sludge, an untreated waste stream previously handled at 374Water’s Orlando operations. According to 374Water, prior similar campaigns showed about 97% solids reduction and up to 99.99%+ PFAS reduction, which this pilot aims to demonstrate in Minnesota.
How large is the St. Cloud, Minnesota contract for 374Water’s mobile AirSCWO pilot (NASDAQ:SCWO)?
The St. Cloud mobile AirSCWO deployment is being conducted under a $600,000 Waste Destruction Services contract with the City of St. Cloud. According to 374Water, the work occurs at the city’s Nutrient, Energy, and Water Recovery Facility, in partnership with Barr Engineering.
What annual revenue potential does 374Water see per mobile AirSCWO unit (SCWO)?
374Water estimates each mobile AirSCWO system could generate $500,000 to $1.5 million in annual revenue per unit. According to 374Water, this range depends on deployment cadence, waste stream composition, and contract structure, and is part of a planned recurring mobile services model.
How does 374Water’s AirSCWO technology address PFAS destruction in the Minnesota pilot for SCWO shareholders?
AirSCWO uses supercritical water oxidation to destroy organic wastes, including PFAS-laden materials. According to 374Water, previous campaigns achieved up to 99.99%+ PFAS reduction, and the St. Cloud pilot supports Minnesota’s broader assessment of the technology for permanent PFAS destruction.
What is the commercial significance of the St. Cloud AirSCWO pilot for 374Water (NASDAQ:SCWO)?
374Water views a successful pilot as supporting Minnesota’s broader assessment and potential follow-on opportunities. According to 374Water, the campaign is helping build a foundation for a scalable, recurring mobile AirSCWO services business that could serve multiple end markets, including Minnesota.
