Claros Technologies: The Company Betting You'd Rather Delete the Problem Than Manage It Forever
Everyone else captures PFAS and stores the liability. Claros destroys it. That one word is the whole thesis.
Company Overview
Start with the problem, because it’s the reason this company exists. PFAS, the “forever chemicals,” are a family of compounds engineered to resist heat, water, and grease. That’s what makes them useful in semiconductors, aerospace, and pharmaceuticals, and it’s also what makes them nearly impossible to break down. They sit in drinking water, industrial wastewater, groundwater plumes, and firefighting-foam sites, and they don’t leave on their own.
The standard playbook is to capture them with filters, concentrate them, and then ship the concentrate to a landfill or an incinerator. You haven’t destroyed anything. You’ve moved the problem and kept the liability.
Claros Technologies is built around a different verb. It destroys PFAS. Its ClarosTechUV system breaks the carbon-fluorine bonds that make these compounds so durable, and the company reports greater than 99.99% destruction across long, short, and ultra-short chain PFAS in field work. Ultra-short chains are the hardest to touch, so that claim matters if it holds up independently. Alongside the destruction hardware, Claros runs ClarosLabs, an accredited analytical division that detects and quantifies PFAS. You get the diagnosis and the cure from the same company.
On July 28, 2026, Claros announced a $55 million Series B, which the company says is inclusive of a previously announced convertible note. Read that carefully: the headline number isn’t all newly priced equity. Treehouse Family Capital led the round, with participation from Daikin America, Veralto, the Bush Foundation, Nord Asset Management, and the Saint Paul & Minnesota Foundation. No valuation was disclosed. For context on trajectory, the company raised $22 million in 2024 and a $10 million convertible note in 2025, and Twin Cities Business reported roughly $39.6 million raised as of December 2025. This is its largest financing to date.
The company was founded in 2018 as a University of Minnesota spinout. CEO and co-founder Michelle Bellanca spent 24 years at 3M, including running its corporate venture arm in Asia, with earlier stops at IBM and Japan’s Ministry of International Trade and Industry. Co-founder and CTO Abdennour Abbas is the university scientist behind the core chemistry, and John Brockgreitens rounds out the founding team on product. A researcher who knows the science, an operator who knows how large industrials actually buy, and a product lead. That’s a useful combination for selling into slow, regulated buyers.
The Market
The incumbents here are granular activated carbon, ion-exchange resins, and membrane filtration, sold by large water players. They work, and they’ve earned their place. But they share one structural feature: they capture and concentrate PFAS rather than eliminate it, which leaves a spent-media disposal problem behind. And that disposal step is turning into its own liability as bans on incomplete incineration spread. When your solution creates a second problem the regulator is about to outlaw, the door opens for someone selling permanence.
The numbers behind the door are real, though you should treat every forecast as a third-party estimate. Grand View Research valued the PFAS treatment market at $2.8 billion in 2025 and projects $4.8 billion by 2033, with the destruction segment growing fastest at a 10.1% CAGR. Future Market Insights sizes the PFAS concentration and destruction systems market at $2.7 billion in 2025, reaching roughly $8.0 billion by 2036. Persistence Market Research notes the U.S. Department of Defense has identified more than 700 contaminated military sites with cleanup costs expected to exceed $3 billion over the decade. And the 3M settlement, widely reported at $10.3 billion, reset how every chemical, military, and airport operator prices this risk.
Timing is the part that’s hard to argue with. The EPA has set a 4 parts-per-trillion limit for PFOA and PFOS in drinking water and put close to $1 billion behind state programs plus $945 million for drinking-water projects. The EU’s Drinking Water Directive limits took effect in January 2026, and broader restrictions are under discussion in Europe. Insurers, meanwhile, have started excluding PFAS claims outright, which forces companies to fund remediation from their own budgets. When the law tightens and the insurance disappears, “manage it later” stops being an option.
