Christiani Wassertechnik GmbH (CWT) has been developing physical water treatment systems against limescale and rust since 1977. CWT is one of the oldest manufacturers of physical water treatment systems in the world.

The family-owned company is headquartered in Berlin. CWT has more than 40 years of experience in environmentally friendly water treatment and manufactures all its products to the highest quality standards - Made in Germany. Its most successful product is the eco-friendly Vulcan Anti-Scale System, which is available in more than 70 countries. Decades of expertise, combined with high quality standards and genuine customer service, are the reasons behind the company’s continued success.