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WATERCryst Wassertechnik GmbH & Co. KG

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Austrian manufacturer of chemical-free BIOCAT limescale protection systems based on biomineralisation.

Last updated September 27, 2026

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Overview

WATERCryst Wassertechnik GmbH & Co. KG is an Austrian company that develops and manufactures chemical-free limescale protection systems marketed under the BIOCAT brand. Its core technology works according to the principle of biomineralisation: instead of removing hardness from drinking water through ion exchange and regeneration salt, BIOCAT devices are designed to prevent the formation of limescale deposits while leaving calcium and magnesium in the water. The company positions this as a health-conscious and environmentally friendly alternative to conventional water softeners, which can reduce beneficial minerals and increase sodium content. The product range is aimed at homeowners, commercial property operators and public institutions. BIOCAT systems are offered in several series and sizes, including the LS and KLS lines, so that a suitable solution can be specified for private houses as well as larger residential, commercial or public buildings. The company states that its catalyst technology protects the entire drinking water installation and supports long-term value retention, and that it meets technical and normative standards across all size classes. Installation is described as simple and quick, with long maintenance intervals, easy handling and low operating costs. WATERCryst emphasises that its systems operate without regeneration salt, chlorides or phosphates. It also highlights eligibility for German public funding: under the Bundesförderung für effiziente Gebäude (BEG), homeowners can receive subsidies of up to 80% for a limescale protection system when it is installed in direct connection with the installation or optimisation of a heating system. The company argues that because limescale deposits significantly impair heat transfer, BEG classifies limescale protection as an energy-relevant accompanying measure. The company states that it has been developing limescale protection solutions based on biomineralisation for more than 20 years. It describes BIOCAT as the leading brand for intelligent limescale protection and says it enjoys the trust of trade and craft partners. Quality management in research, development, production, commissioning, maintenance and sales is certified according to DIN EN ISO 9001:2015, and its environmental management system meets DIN EN ISO 14001:2015. WATERCryst also maintains a factory customer service qualified according to VDI 6023. In 2022 the chemical-free limescale protection technology received the PLUS X AWARD in the categories "Best Product 2022" and "Best Brand 2022". The company communicates through a website with a media library, download centre and newsletter, and produces product videos, training videos and reference videos covering applications such as municipal housing, shopping centres, event catering and private households.

History

WATERCryst Wassertechnik GmbH & Co. KG is an Austrian company that has specialised in chemical-free limescale protection. According to its own corporate information, it has been developing limescale protection solutions based on the principle of biomineralisation for more than 20 years. The company's core product line is marketed under the BIOCAT brand, which it describes as the leading brand for intelligent limescale protection and as enjoying the trust of partners in trade and craft. The company's approach differs from conventional water softening. Instead of removing calcium and magnesium from drinking water through ion exchange and periodically regenerating the resin with salt, BIOCAT devices are designed to prevent limescale build-up while leaving the natural water hardness unchanged. WATERCryst argues that this keeps valuable minerals such as calcium and magnesium in the drinking water and avoids increasing sodium content, which it presents as beneficial for health. The systems operate without regeneration salt, chlorides or phosphates. Over the years WATERCryst has expanded its product range into several series and size classes. The BIOCAT LS and KLS series are designed to cover applications from private houses to larger residential, commercial and public buildings. The company states that its catalyst technology protects the entire drinking water infrastructure from limescale formation and supports long-term value retention, and that BIOCAT meets technical and normative standards in every size class. It also offers the KALKSTOPP-EI, a product aimed at giving limescale no chance. Quality and environmental management are central to the company's self-presentation. WATERCryst states that its quality management in research, development, production, commissioning, maintenance and sales of chemical-free limescale protection systems is certified according to DIN EN ISO 9001:2015, and that its environmental management system meets DIN EN ISO 14001:2015 and is an elementary part of its business activities. It also maintains a factory customer service qualified according to VDI 6023. In 2022 the company's chemical-free limescale protection technology received the PLUS X AWARD in the categories "Best Product 2022" and "Best Brand 2022". WATERCryst communicates with customers and partners through its website, which includes a media library with product videos, training videos and reference videos, a download centre for brochures, flyers and forms, and a newsletter. The reference videos cover applications such as municipal housing companies, a city quarter with a shopping centre, event catering in hard water areas, and private households. The company also emphasises the funding eligibility of BIOCAT systems under the German Bundesförderung für effiziente Gebäude (BEG), where homeowners can receive subsidies of up to 80% when the limescale protection system is installed in direct connection with a heating system.

  • WATERCryst receives the PLUS X AWARD in the categories "Best Product 2022" and "Best Brand 2022" for its chemical-free limescale protection technology.

Products and positioning

Chemical-free limescale protection that preserves water hardness and minerals, positioned as a health-conscious and sustainable alternative to salt-based water softeners.

  • BIOCAT limescale protection devices

    Chemical-free limescale protection systems based on biomineralisation, operating without regeneration salt, chlorides or phosphates and without changing water hardness.

  • BIOCAT LS series

    A series of BIOCAT limescale protection devices.

  • BIOCAT KLS series

    A series of BIOCAT limescale protection devices.

  • KALKSTOPP-EI

    A product marketed with the slogan "Give limescale no chance".

Recent events

  • Unconfirmed

    Reported

    BIO-CAT sponsors UIUC digestive-enzyme clinical trial[6]

    BIO-CAT sponsored a University of Illinois at Urbana-Champaign clinical trial examining the BC-006 digestive enzyme blend in older adults.

  • Reported

    BIO-CAT partners with Kerry to distribute OPTI-BIOME MB40[7]

    BIO-CAT announced a global partnership with Kerry under which Kerry will lead sales, marketing and distribution of BIO-CAT's OPTI-BIOME MB40 probiotic strain, effective June 2021.

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