One of the strongest takeaways from Ozwater’26 was how firmly the conversation has shifted upstream, both literally and figuratively. Across a range of sessions, there was a clear emphasis on catchments, waterways and environmental condition as the starting point for decision-making, rather than an afterthought once infrastructure solutions are on the table.
Several presentations reinforced that we are getting better at understanding how actions in one part of the system play out across the whole. Work on catchment processes, river health and receiving environments highlighted the practical implications of this—whether it’s how stormwater interacts with urban creeks, how nutrients and contaminants move through systems, or how flow regimes shape ecological outcomes. There is also more use of continuous monitoring, more integration of datasets, and a stronger link between what we measure and how we manage.
A noticeable step forward is the growing confidence in using this information to guide decisions. Rather than collecting data for compliance or reporting, speakers showed how it is actively being used to prioritise investment, adjust operations and test different management approaches. This is particularly evident in urban waterways, where utilities and councils are working more closely to balance flood management, water quality and ecological health. There were good examples of projects where interventions are being assessed not just on cost or hydraulic performance, but on measurable improvements to receiving environments.
That shift is also changing how we think about infrastructure. Instead of designing assets in isolation, there is increasing focus on how they perform within a catchment. Contributions touching on infrastructure planning and delivery made it clear that “fit-for-purpose” now has a broader meaning—it includes environmental fit as much as engineering performance. In practice, this means designing systems that can adapt to variable flows, reduce pollutant loads, and align with longer-term catchment objectives.
Circular economy thinking is also starting to show up more concretely in this space. Presentations looking at resource recovery and system efficiency tied environmental outcomes to operational decisions—whether through reducing waste streams, recovering nutrients, or optimising energy use. Importantly, these weren’t framed as add-ons, but as part of the core business of running water systems in a resource-constrained and climate-variable context.
Another consistent message was that none of this happens without collaboration. Many of the examples presented relied on partnerships—between utilities, local government, researchers and regulators—to get to better outcomes at a catchment scale. Aligning objectives across organisations remains difficult, particularly where responsibilities are split, but there were encouraging signs of progress. Shared datasets, joint planning processes and co-designed projects are becoming more common, and they are starting to deliver clearer, more defensible outcomes.
There was also an acknowledgment that capability is still catching up with ambition. Working at a catchment scale requires different skills—interpreting complex datasets, understanding ecological responses, and making decisions under uncertainty. Several speakers pointed to the need to keep building this capability across the sector, not just within specialist teams.
What felt different this year, though, was the level of practical application. The ideas being discussed are no longer conceptual—they are being tested, refined and, in some cases, embedded into business-as-usual processes. That is particularly relevant for WaterRA members, where the focus is on translating research into impact. The link between research insights and operational decisions is becoming more visible.
Overall, Ozwater’26 pointed to a sector that is taking catchments and waterways seriously as the organising framework for water management. That doesn’t make decisions easier—if anything, it exposes more complexity—but it does lead to decisions that are better aligned with long-term environmental and community outcomes.
Dr Zach Powell
Research Manager, Water Research Australia