Wedeco was founded in 1976 in Herford, Germany to develop chemical-free and environmentally friendly water treatment technologies, including UV light and ozone systems. More than 250,000 Wedeco systems for UV disinfection and ozone oxidation are installed worldwide in private, municipal and industrial premises. Wedeco introduced ozone technology in 1988 and has been expanding internationally ever since. UV disinfection systems have a number of applications including water treatment and aquaculture. Ozone disinfection systems are used in drinking water, wastewater, process water, product polishing, bleaching, ozonolysis/synthesis, and deodorization.

Wedeco UV systems offer customers an alternative to environmentally harmful chemicals used for disinfection, including chlorine, chlorine dioxide and hypochlorite. UV disinfection is adapted to the natural action of sunlight and is extremely versatile. Ultraviolet light can be used to disinfect water, destroy harmful microorganisms in other liquids, on surfaces and in the air. Wedeco UV systems are suitable for the disinfection of drinking water, industrial water, waste water, salt water, ultrapure water and other translucent liquids such as sugar syrup.

Ozone is one of the strongest industrially produced oxidizers and is commonly used to treat water in municipal and industrial applications. A special advantage of ozone is its environmentally friendly way of action. Harmful substances, colors, odors and microorganisms are destroyed directly by oxidation, without the formation of harmful, chlorinated by-products. In addition to drinking water and wastewater treatment, Xylem's Wedeco ozone systems are used in bleaching processes such as paper bleaching and other industrial oxidation processes.

Xylem's Wedeco brand also offers Advanced Oxidation Process (AOP) solutions designed to remove a wide range of toxic compounds and microscopic contaminants. Wedeco Xylem's pre-engineered AOP systems are based on three key components – ozone, hydrogen peroxide and UV light produced by high intensity low pressure lamp technology. By combining these technologies, Xylem is able to meet individual customer requirements.