Water treatment is a fundamental concern around the world due to the lack of good quality drinking water, and growing environmental concern. Chemicals’ usage is minimised and new more efficient methods for water treatment and measurements are introduced. Good examples are membrane technology, electrodeionisation, and UV-disinfection with new on-line measurement techniques. Teollisuuden Vesi - Industrial Water, specialised in water treatment, is able to inform and serve the industry with deep knowledge of contemporary techniques prior to the commitment and during the operation. This will enable the company to see process alternatives easily saving time in final design.