World first: Softest Pearlwater with Perfect Taste

What was once a challenge for plumbing professionals, and considered impossible without costly, dual-​piping systems, is now a reality thanks to an innovative concept. The BWT One Pipe Power formula ensures that water from a single pipe is softened throughout the entire building and mineralized and filtered in the kitchen for cold drinks. This revolutionary system eliminates the need for double-​​piping, reducing installation time and cost while setting new standards for hygiene. BWT is now a leader in this patented technology that completely transforms the approach to drinking water treatment.

“Years ago, silky-​​soft Pearlwater from BWT revolutionized the market. Since then, millions of homeowners and building operators have enjoyed its numerous benefits,” says Andreas Weissenbacher, CEO of BWT. “Now, with One Pipe Power Pearlwater, we’re taking that success story to the next revolutionary level. We’ve created a solution that will dramatically improve people's quality of life, enhance the hygiene and safety of water systems in large buildings, and contribute to the sustainable protection of our planet.”

The revolutionary system features two key components: the innovative BWT PerlaMAXX or Rondomat duoMAXX soft water systems, which deliver the softest Pearlwater, and the BWT Pearlwater Mineralizer Kitchen Set, a smart, under-​sink solution that mineralizes the water at the touch of a button. This combination ensures that BWT provides the highest quality water for every application, whether in detached or semi-​detached homes, multi-​unit residential buildings, hotels, offices, or public facilities.

1. BWT Pearlwater Systems: As soon as calcareous water enters a building via the existing pipe, BWT’s PerlaMAXX water softeners transform it into ultra-​soft Pearlwater with a hardness level of less than 4 °dH. The latest-​generation Rondomat duoMAXX water softener is the first series-​produced unit with full thermal insulation and a plug-​and-play installation concept.
2. BWT Pearlwater Mineralizer Kitchen Set – Powered by Mixxo Pro: The BWT Pearlwater Mineralizer Kitchen Set can be easily installed under existing kitchen taps and remineralizes the softened water with valuable minerals – calcium, magnesium, and silicates as well as hydrogencarbonate – at the touch of a button via an elegant chrome remote control. Replacing the mineralization cartridge under the sink, which can process up to 3,000 liters of water, is simple and quick.

One Pipe Power joins a long list of BWT innovations with a clear goal: to offer customers enhanced taste, comfort, well-​being, and hygiene while making a sustainable contribution to the planet. Building owners, installers, and operators benefit from energy savings, fewer breakdowns, and reduced repairs to installations and appliances. Residents enjoy fewer limescale deposits in bathrooms, less cleaning effort, and a smoother feeling on the skin, softer hair, and noticeably softer textiles. Additionally, the silky-​soft Pearlwater reduces the need for detergents, cleaning agents, and cosmetics, lowering environmental impact.

The tastiest mineralized Pearlwater for drinking, enriched with magnesium, silicates, and bicarbonates, promotes well-​being and vitality. With this system, the need for bottled water—whether plastic or glass—is eliminated, saving up to 80% of CO2 emissions from transportation.

“As part of BWT's mission, ‘For You and Planet Blue,’ we are committed to providing our customers with water quality that they can see, feel, and taste the difference. At the same time, we’re helping protect our planet by reducing the need for bottled water, eliminating transport emissions, and cutting down on plastic waste. We are especially proud today to present One Pipe Power Pearlwater—a solution that benefits our customers, their businesses, and the environment,” said Andreas Weissenbacher during the presentation of One Pipe Power at ISH 2025.

The unique combination of maximum softening to less than 4 °dH and subsequent remineralization with the touch of a button provides strong advantages for professionals in the HVAC and construction industries. Planners, architects, facility management companies, investors, real estate developers, water treatment professionals, kitchen studios, and housing associations can rely on BWT's expert team to implement One Pipe Power optimally in their projects.

BWT One Pipe Power guarantees the softest and tastiest mineralized Pearlwater from a single pipe while also offering top-​tier service and expert advice—both personally and digitally. Thanks to the intelligent BWT Best Water app, users enjoy seamless, smart management of their water appliances. The app turns any smartphone into a personal water assistant, with features like reminders, status displays, real-​time monitoring, and on-​demand expertise always at hand.