The UN Documentation Centre on Water and Sanitation is developed by the UN-Water Decade Programme on Advocacy and Communication (UNW-DPAC) with the support of the Municipality of Zaragoza, Spain.

Towards the primary goal of the Water for Life Decade, Spain agreed to provide resources to the United Nations to establish an Office to support the International Decade for Action in Zaragoza, Spain. The Office implements the UN-Water Programme on Advocacy and Communication (UNW-DPAC) and aims at sustaining the global attention and political momentum in favour of the water and sanitation agenda at all levels during the Decade. The Office assists UN-Water with a coordinated communication response to accelerate the implementation of the water and sanitation agenda. To that end, its activities complement and add value to existing programmes and projects of UN-Water organizations. The Office promotes visibility of UN-Water actions at all levels and makes it easier for Member States and a diverse set of audiences to acquire information about UN-Water programmes and projects