The Water Innovation Townhall: Stories from the Tipping Point
The water sector is not short on innovation. What is changing, rapidly, is which innovations can move fast, scale under real-world constraints, and attract capital.
That was the underlying message of the Water Almanac 2026, BlueTech Research’s annual live briefing, held in the quieter week after New Year. Bringing together BlueTech leadership, analysts and Technology Advisory Group experts, the session stepped back from individual announcements to surface the deeper signals shaping the year ahead.
Across technologies, markets and geographies, one pattern stood out: water is becoming more engineered, more electrified, and more tightly bound to infrastructure logic. The question is no longer what’s possible, but what can be deployed.
Opening the session, BlueTech CEO Paul O’Callaghan reframed a familiar conversation. The competitive edge in water, he argued, is increasingly about speed: speed to market, speed to deploy, speed to commission.
That shift is visible in the rise of modular, prefabricated and plug-and-play treatment systems. In industrial water in particular, clients are prioritising solutions that arrive integrated, tested and ready to operate, rather than bespoke systems built slowly on site. As systems become more modular and automated, value shifts away from traditional engineering hours and toward solution providers capable of integration at scale.
Electrification underpins much of this change. Across electrochemical oxidation, electrocoagulation, onsite chemical generation and bipolar membrane electrodialysis, electricity is increasingly replacing delivered reagents. The appeal is not novelty, but control: control over supply chains, operating costs and decarbonisation pathways.
Later in the session, this theme resurfaced repeatedly. From Vishal Wagholikar’s overview of bipolar membranes to Rick Woodling’s survey of emerging technologies. Electrification is not a niche trend; it is becoming an organising principle for how treatment systems are designed and evaluated.
PFAS is no longer one market
Few topics dominated the 2025 research agenda as much as PFAS, but the Water Almanac made clear that “PFAS” is no longer a single market.
Kim Wu highlighted the surge in PFAS sensing innovation, driven by regulatory pressure and the need for more responsive monitoring. Ali Ling and Jacob Steele then unpacked how the landscape is fragmenting into distinct sub-markets: sensing, separation, destruction and residuals management, each with different economics, risk profiles and maturity levels.
Regulatory divergence is accelerating this split. In the US, limits focused on individual compounds favour technologies such as granular activated carbon, while the EU’s broader approach pushes utilities toward ion exchange and membrane-based solutions. Meanwhile, biosolids and residuals management are emerging as the next bottleneck, not whether PFAS can be removed, but what happens to it afterwards.
The implication for 2026 is sobering. As Jacob Steele noted, many pure-play PFAS destruction startups face a difficult year ahead unless they are positioned within broader treatment trains or adjacent markets. PFAS is no longer a standalone opportunity; it must fit into an integrated system.
Brines are becoming feedstocks
Another thread woven throughout the session was the quiet reclassification of brines, from waste streams to potential feedstocks.
Jeff Guild’s review of leading WEFTEC papers showed how utilities and industrial operators are increasingly weighing near-zero liquid discharge against full ZLD, focusing on unit economics rather than technical extremity. Hybrid treatment trains, selective concentration steps and right-sized thermal processes are replacing one-size-fits-all approaches.
Vishal Wagholikar’s deep dive into bipolar membrane electrodialysis reinforced this shift. By converting salt streams into acids and bases using electricity, EDBM reframes brines as inputs for chemical production rather than liabilities to be disposed of. Rick Woodling extended the picture further, highlighting emerging alternatives such as temperature swing solvent extraction, low-salt-rejection reverse osmosis and ceramic ion exchange membranes designed for aggressive environments.
Across these examples, the message was consistent: the future of brine management is not about elimination, but valorisation: technically, economically and strategically.
Hydrogen: regional, political and uneven
Hydrogen remains one of the most closely watched intersections between water and energy, but the Water Almanac offered a notably sober assessment.
Karen Meidlinger described a market defined less by global momentum than by regional dynamics. In the US, uncertainty around policy and incentives has slowed activity, while Europe, parts of Asia and China continue to push ahead with clearer strategic intent. Hydrogen’s relationship with water—particularly around sourcing, treatment and competition—is under increasing scrutiny as projects move from concept to reality.
The takeaway for 2026 is realism. Hydrogen is not disappearing, but its trajectory will be uneven, shaped by local policy, infrastructure readiness and energy economics rather than hype.
Capital has arrived, but it is selective
If innovation is no longer the constraint, is capital? Hubert Flemming’s investment round-up suggested otherwise.
Water is attracting unprecedented attention from infrastructure funds, private equity and strategic investors, particularly in regions experiencing industrial expansion and reshoring. Asia dominates global investment volumes, the US is accelerating rapidly, and Europe remains steady. Infrastructure funds, historically absent from water, are now entering at scale, bringing a different lens to risk, returns and timelines.
What they are backing is telling. Decentralised systems, reuse, digital optimisation, brine management and PFAS infrastructure are drawing interest. Pure novelty is not. In 2026, bankability, scalability and integration into broader infrastructure systems will matter far more than technical elegance alone.
The bigger picture: water is becoming more engineered
Stepping back, Glen Daigger framed the year’s developments through a tightening supply–demand nexus. Climate impacts, groundwater depletion and industrial growth are colliding, leaving fewer opportunities to simply extract more water from the environment. Manufactured water—desalination, reuse and advanced treatment—is moving decisively to the centre of planning.
Rhys Owen closed the session by outlining how these pressures are shaping BlueTech’s 2026 research agenda: advanced treatment, process intensification, sludge and biosolids, modular systems, digital-nature hybrids and investment dynamics. The common thread is focus, separating signal from noise as the sector becomes more targeted, more modular and more outcome-driven.
The Water Almanac did not offer predictions in the abstract. Instead, it revealed a sector in transition, from experimentation to execution, from innovation to infrastructure.
For technology developers, utilities, investors and policymakers alike, 2026 looks set to be a year of selection. Not every innovation will scale. Not every market will move at the same pace. Understanding where constraints are tightening, and where momentum is real, will matter more than ever.
The full recording of the Water Almanac, along with individual speaker segments, is available to revisit. The signals are there. The challenge now is what to do with them.
