A 3d render of Cascade’s greywater recycling system installed in a modern bathroom.
Dundee-based water technology firm Cascade Water Products, has secured angel investment of up to £350,000 towards helping commercialise its innovative micro-greywater recycling system.
Cascade says the investment, from a group of European and American investors, will enable it to accelerate production and bring its technology to market, initially targeting holiday resorts, hospitality venues, homes with private water supplies, and other residential properties.
Co-founder Caroline Hogg.
Founded by Angus couple Carolyn Hogg and Peter Holdsworth, Cascade represents the culmination of more than a decade of research and development. What began as an engineering challenge at their kitchen table has evolved into “a proven technology that addresses both immediate water efficiency needs for commercial and residential properties and the broader global challenge of water scarcity, affecting even water-rich nations”.
In Scotland, recent challenges including Backwater Reservoir near Dundee falling to 43% capacity – less than half its normal winter levels – have highlighted the need for innovative water efficiency solutions across all property types. Cascade’s micro-greywater recycling system captures and treats water from showers and baths for reuse in toilet flushing, reducing domestic water consumption by up to 45%.
The technology is particularly relevant for properties with private water supplies, houses in multiple occupation (HMOs), rental properties including social housing, and holiday accommodation where water efficiency directly impacts operational costs and environmental credentials.
The company’s water recycling system has seemingly been continuously operational in the founders’ home for over three years. During this extended testing period the group says it has refined the design whilst demonstrating its practical viability for everyday use.
Peter Holdsworth, Co-Founder and Chief Engineer at Cascade Water Products, said: “We’ve proven that the system works – it’s been running in our home every day for over 1,000 days. Now we’re ready to make it available to the markets that need it most, from holiday parks facing hefty water charges to homeowners on private water supplies looking for sustainable solutions.”
Lead investor, Mohan Ramani, said: “Cascade represents exactly the kind of innovation we look for – a Scottish company with genuine technical credibility, solving a real global problem with a proven solution.
“Carolyn and Peter have demonstrated extraordinary dedication in developing this technology. They’ve done the hard yards to prove it works, and now they have the opportunity to scale a solution that addresses water scarcity challenges we’re seeing across developed and developing markets alike. Scotland should be proud to be leading on this innovation.”
With the investment secured, Cascade said it is now focused on commercialising the system for general sale. The company will showcase its technology at Future Build 2026, a UK construction and sustainability exhibition.
Cascade’s Aqua Gratis greywater recycling system.
The timing coincides with growing market demand for water efficiency solutions, driven by regulatory changes, environmental concerns, and the economic benefits of reduced water consumption in commercial settings. Cascade said its system is designed for retrofitting into existing properties as well as installation in new builds, making it accessible across a wide range of applications.
Cascade said the investment will allow it to establish its supply chain, scale production capabilities, and develop its go-to-market strategy. The company is targeting the self-build market, where sustainability-conscious homeowners are actively seeking innovative solutions, alongside commercial opportunities in leisure and tourism and the HMO segment where water efficiency delivers both cost savings and environmental benefits.
