Agriculture is the major user of water in most countries. It also faces the enormous challenge of producing almost 50% more food by 2030 and doubling production by 2050. This will likely need to be achieved with less water, mainly because of growing pressures from urbanisation, industrialisation and climate change. This report shows the trends and outlook for water use in agriculture, examines the policy experiences of OECD countries in managing their resources - and recommends what countries should be doing and why.