Hansgrohe Group showcased an innovative grey water recycling solution aimed at sustainable water use at the ISH 2025, a leading trade fair for HVAC and water, held in Frankfurt, Germany, last month.

The bathroom and kitchen specialist displayed the system at its booth, highlighting its ‘Green Vision’ concept, which aims to significantly reduce water and energy consumption.

The solution was developed in partnership with Dutch company Hydraloop.

The Green Vision bathroom concept – which promises to reduce water and energy consumption by up to 90 per cent – caused quite a stir when it was presented by the group two years ago, says Hansgrohe.

“We see our Green Vision as an inspiring invitation to rethink our use of water in everyday life and to develop resource-saving solutions together,” says Hans Jürgen Kalmbach, CEO, Hansgrohe Group.

Kalmbach says the partnership with Hydraloop brings a key element of the group’s vision to reality. The system recycles wastewater from showers, bathtubs, and washing machines, producing certified recycled water suitable for non-potable uses.

“Showering is about much more than physical hygiene – it’s also a moment of mental renewal. To ensure that this feel-good experience does not come at the expense of valuable resources, we combine innovative water-saving technologies with systemic solutions, such as in our collaboration product with Hydraloop to rethink sustainable water consumption without compromising on design and comfort,” says Kalmbach.

Kalmbach ... invitation to rethink our use of water.

Hansgrohe has a longstanding commitment to sustainable water management, having previously offered grey water recycling systems under the Pontos brand between 2003 and 2011.

Pontos was a pioneering solution that allowed to reuse water efficiently. Now, with Hydraloop’s cutting-edge technology, Hansgrohe takes the next step in grey water recycling, integrating modern advancements such as IoT connectivity, minimal maintenance and enhanced system efficiency.

The compact, cabinet-sized treatment system collects wastewater from showers, bathtubs, washing machines and condensation water from heat pumps, air-conditioning systems and tumble dryers, and cleans and disinfects it in an innovative biological process. The result is high-quality, certified recycled water suitable for non-potable applications like toilet flushing, garden irrigation, and the washing machine.

“Striking a balance between user experience, efficiency, resource conservation and regulatory requirements is a challenge. More and more green building certifications require building projects to meet sustainability criteria for planning permission,” explains Kalmbach. “We are convinced that this effective and reliable solution will enable us to tap into the potential of grey water recycling at the right time, especially for hotels, public and semi-public buildings and all construction projects that focus on sustainability.

“Circulatory solutions in buildings, in which different qualities of water are used for different purposes, offer enormous potential. In order to exploit this, the regulatory framework must be adapted to enable innovation.”

Hansgrohe emphasises the growing demand for sustainable building solutions, particularly in hotels and public buildings, driven by green building certifications. The company also calls for regulatory changes to promote wider adoption of water recycling technologies.

The partnership aligns with Hansgrohe’s broader sustainability strategy, ‘ECO 2030’, which aims to equip all water-bearing products with water-saving technologies by 2030.

Hydraloop, based in the Netherlands, specialises in circular water solutions and has a global presence.

Hansgrohe Group, headquartered in Schiltach, Germany, is a manufacturer of bathroom and kitchen fittings, with brands AXOR and hansgrohe. The company generated a turnover of €1.406 billion ($1.52 billion) in 2023 and employs approximately 5,400 people worldwide.