- a global brand now in over 70 countries Established 1948

Christiani Wassertechnik GmbH

Christiani Wassertechnik GmbH (CWT) is a family-run business established in 1948 and headquartered in Berlin, Germany. Our Vulcan anti-limescale products are manufactured in Germany and are available in over 70 countries. They were originally developed for large industrial applications; Shell, Bayer, Seimens etc.

CWT has been developing physical water treatment systems against scale and rust and uses cutting edge and technologically advanced system to combat limescale problems for homes, commercial and industrial use. This knowledge together with our high quality standards and genuine customer service accounts for the lasting success of our global business. The Vulcan systems now consist of 12 models capable of treating hard water in pipe diameters from 15mm up to 1000mm. 



Corporate Responsibility

  Unfortunately not everybody in the world has access  to clean water. Over 60% of the world’s population suffer from lack of water and have no access to clean, safe drinking water. The situation in third world countries is especially worsened by environmental disasters, drought and long, raging wars.  

It is our responsibility to help – We want to help make a difference.

Since May 2005 we have been supporting the well building project of the charity organisation ‘Plan International Deutschland’. The wells sponsored by CWT provide clean water to over 300 people daily in the African town of Guinea.

To learn more about Plan International: www.plan-uk.org



   SODIS (short for Solar Water Disinfection) is an initiative of Eawag, the Swiss Federal Institute of Aquatic Sciences and Technology. For more than 10 years, it has been  providing people in developing countries with access to clean drinking water. The aim is to educate the people on how they can disinfect water themselves in a few hours and thus prevent diarrhoeal diseases.


Yet again CWT sponsors the project, which educate people on how they can desinfect their water themselves.

To learn more about Sodis visit: www.sodis.ch