Regulation and innovation have an uncomfortable relationship in much of the infrastructure sector. Regulations set minimum standards; innovation often aims to exceed them. The regulatory compliance requirement creates a floor, but it can also create a ceiling when utilities optimise for minimum compliance rather than maximum performance. 

In surface water treatment, this tension is resolving in an interesting direction. The progressive tightening of drinking water regulations, particularly for pathogens, disinfection byproducts, and emerging contaminants like PFAS, is creating innovation pressure that is pushing the sector toward treatment technologies and operational approaches that were considered advanced just a decade ago. 

This is regulatory pressure working as intended: creating the conditions in which investment in better treatment is commercially necessary, rather than merely desirable. The World Economic Forum’s 2025 water innovation review noted that regulation continues to be one of the strongest levers for accelerating innovation in the water sector, with tightened oversight in 2025 creating new impetus across multiple treatment areas. 

PFAS as an Innovation Driver 

No regulatory development is driving more treatment innovation in surface water facilities right now than the establishment of PFAS drinking water standards. The challenge that PFAS presents for treatment utilities is genuinely novel: these compounds are highly stable, present in trace concentrations, and not amenable to the conventional biological and chemical treatment processes that address most drinking water contaminants. Removing them to the parts-per-trillion levels required by the EPA’s MCLs requires either advanced adsorption, typically using granular activated carbon or ion exchange resins, or membrane technologies such as nanofiltration or reverse osmosis. 

The market for PFAS treatment solutions in surface water facilities is expanding rapidly, driving investment in process development and cost reduction across multiple technology platforms. GAC technologies are being optimised for PFAS removal efficiency and regeneration cost. Ion exchange resins specifically designed for PFAS removal are being developed and commercialised. And integrated treatment train approaches that combine multiple barriers are being evaluated for their cost-effectiveness across different source water PFAS profiles. 

For utilities evaluating their PFAS compliance pathway, the available technology options are more developed today than they were even two years ago, and they are continuing to evolve. The challenge is evaluating the options available now, in the context of a cost-benefit framework that also accounts for likely further technology development over the compliance period. This is precisely the kind of multi-option, forward-looking analysis that generative design platforms are designed to support. 

HAB Treatment Innovation 

Harmful algal blooms are a second significant driver of treatment innovation in surface water facilities. The conventional treatment train, designed for turbidity and pathogen removal, provides limited protection against the dissolved cyanotoxins and taste-and-odour compounds that HABs introduce. Achieving reliable protection requires additional treatment barriers: oxidation, adsorption, or combinations of the two. 

The response from the treatment technology industry has been innovative. Advanced oxidation processes using UV and peroxide combinations are being developed specifically for cyanotoxin removal. Novel PAC formulations with higher adsorption capacity for specific cyanotoxins are entering the market. And real-time monitoring tools that allow operators to detect bloom-related compounds at the intake and adjust treatment in advance of toxin breakthrough are improving the operational management of HAB events. 

The pattern here mirrors the PFAS story: regulatory pressure, in the form of increasing enforcement of drinking water standards during HAB events, is driving the development and commercial deployment of more effective treatment solutions. The facilities that invest early in advanced HAB treatment capability will be ahead of the compliance curve as regulatory requirements tighten. 

Digital Innovation as an Enabler of Treatment Innovation 

The digital transformation of infrastructure design and capital planning is enabling treatment innovation in a specific and important way: by making it more practical to evaluate new treatment technologies at the planning stage, before commitments are made. 

The Transcend Nexus program integrates technology providers, including providers of innovative PFAS treatment and advanced oxidation solutions, into the early-stage design workflow that engineers and utilities use for optioneering. When a utility evaluating its PFAS compliance pathway runs scenarios in TDG, innovative treatment options appear alongside conventional ones, with engineering-quality cost and performance data for each. This dramatically lowers the analytical barrier to considering innovative technologies, which is one of the most important obstacles to their adoption. 

Regulatory pressure creates the demand for better treatment. Digital platforms make it easier to evaluate and select the solutions that best meet that demand. Together, they create a virtuous cycle in which compliance requirements drive adoption of better treatment, and better design tools make adoption more accessible and more cost-effective. 

The Long-Term Direction 

The direction of travel in surface water treatment regulation is clear: toward stricter standards for a wider range of contaminants, applied to more utilities, with increasing scrutiny of treatment adequacy and treatment train performance. Utilities that prepare for this trajectory, by investing in treatment flexibility and adopting the analytical tools that make rigorous multi-technology evaluation practical, will be better positioned than those that invest only for minimum compliance with current requirements. 

Regulatory pressure is a constant in the water sector. The utilities and engineering firms that learn to use it as a driver of better infrastructure investment, rather than just a compliance burden, are the ones that will build the most resilient and highest-performing treatment systems for the communities they serve. 

To explore how Transcend supports innovative treatment technology evaluation for surface water facilities, visit transcendinfra.com/nexus.