A new University of Surrey-led research agenda argues that the UK cannot meter its way out of water stress. With England facing a projected 5 billion litre daily freshwater deficit by 2055, the report makes the case for a more evidence-led approach to behaviour change – and shows why bathroom habits, from leaks to showering and toilet flushing, must be central to the solution.
The water sector has known for some time that demand reduction has to do more of the heavy lifting. According to a report from the Institute for Sustainability at the University of Surrey, if no action is taken, England could face a 5 billion-litre daily freshwater deficit by 2055, and around 60% of that gap will need to be closed through demand management while longer-term supply options are developed. Smart metering matters, but the authors are blunt: metering alone will not get the sector where it needs to be. Behaviour change has to become a bigger part of the picture.
That matters for anyone involved in bathrooms, water-using products and household water efficiency. The report, produced by the University of Surrey’s Water Efficiency ARC Lab with partners across the sector, engaged more than 100 people from over 60 organisations, including the Bathroom Association, to identify the biggest unanswered questions in domestic water-efficiency behaviour change. The outcome is not a list of quick wins. It is a warning that the sector still lacks enough shared evidence on which behaviours to target, what stops people changing, and which interventions are most likely to work in real homes.
One finding jumps off the page for the bathroom sector. When participants were asked which behaviours matter most for water conservation initiatives, the top three were reporting or fixing in-home leaks, showering and flushing toilets. Four of the six highest-priority behaviours were bathroom-based: showering, flushing toilets, taking baths and using the bathroom sink. That should sharpen minds across the bathroom supply chain. Bathrooms are not a side issue in the water efficiency debate. They are one of the main fronts.
Another important point is the role of habit. Many everyday water-using actions are deeply routine and done with very little conscious thought. The report argues that habit-breaking strategies deserve much more attention because education alone often fails to shift automatic behaviours. That has obvious implications for product design and specification. Better feedback, clearer controls, smarter defaults, timed prompts, and more intuitive water-saving functionality may do more than awareness campaigns alone, especially when paired with moments of change, such as a bathroom refit or a home move.
For the bathroom industry, the takeaway is clear. Water efficiency is no longer just a technical performance conversation about litres per minute or flush volumes, important though those remain. It is increasingly a question of how products, spaces and information work together to shape everyday use. Manufacturers, retailers, installers and policymakers have a stronger case than ever for treating bathroom design as part of behaviour change infrastructure.
There is also a commercial and policy angle here. If the sector is serious about reducing household demand, then bathrooms should be central to future research, messaging, standards and incentives. Leak reduction, showers and toilets are already where stakeholders see the biggest behavioural opportunities. That opens the door to more targeted collaboration between water companies, behavioural scientists and bathroom manufacturers on the products and interventions most likely to make a measurable difference.
The Surrey report does not pretend to have all the answers. What it does provide is a more honest starting point. The UK needs a better evidence base on what changes domestic water use in practice, and the bathroom is one of the most important places to build it. For an industry that designs, makes and supplies the products people use every day, that is not a threat. It is an opportunity.