Waternet is the merged organisation of the Waterboard Amstel, Gooi & Vecht, the Service for Surface Water and Sewerage Management of the City of Amsterdam, and the Amsterdam Water Supply.

It is the first and only public organisation in the Netherlands that manages the complete cycle of surface water, groundwater, drinking water, the sewerage system and wastewater.

Waternet, started in 2006, is a relative young organisation, but its roots date back to 1307 when the oldest predecessor of the Waterboard officially was founded, and to 1851 when the Amsterdam Water Supply started.