PWNT  is wholly owned by Dutch water utility PWN, and is unique in its formation and mission to make the utility’s 100 years of experience and innovations in water treatment available worldwide.

Our extensive R&D programmes have led to the development of efficient and sustainable solutions in water treatment based on suspended ion exchange, ceramic membrane applications and advanced oxidation, applications that can be used for a wide variety of water sources. Operational profits are reinvested in our R&D programmes to develop new efficient and sustainable solutions.


PWN Water Supply Company North-Holland (head offices in Velserbroek) is a social enterprise operating on a non-profit basis and fully owned by the province of North-Holland. Each year, 106 million cubic metres of drinking water is supplied to 750,000 private households, companies and institutions in the province of North-Holland at cost price.

Water treatment takes place in water plants in Andijk, Bergen, Heemskerk and Wijk aan Zee, and in the dunes. In addition PWN manages more than 7300 hectares of natural areas between Zandvoort and Bergen on the province’s behalf. PWN had led the world with new innovations for water treatment such as advanced oxidation and membrane techniques.