Lakes in Finland

World Water Assessment Programme

Understanding the state, use and management of the world’s freshwater resources and designing better water policies

UNESCO established the World Water Assessment Programme (WWAP) in 2000 in response to a call from the UN Commission on Sustainable Development (CSD) to produce a UN system-wide periodic global overview of the status, use and management of freshwater resources.

Its overall objective is “to meet the growing requirements of UN Member States and the international community for a wider range of policy-relevant, timely and reliable information in various fields of water resources developments and management, in particular through the production of the United Nations World Water Development Report (UN WWDR)”. Consequently, WWAP, through the World Water Development Reprts and complementary activities, aims to equip water managers and policy- and decision-makers with knowledge, tools and skills necessary to formulate and implement sustainable water policies.

In focus

Partnerships and Cooperation for Water

the UN World Water Development Report 2023

Achieving gender equality in the water domain

Call for action

Groundwater, making the invisible visible

the World Water Development Report 2022

World Water Development Reports

Partnerships and cooperation


Groundwater, making the invisible visible


Valuing Water


Water and Climate Change