 He was an honorary member of the World Commission on Water for the 21st century and patron of the Global Water Partnership, a body established by the World Bank, the UN, and the Swedish Ministry of Development.He was appointed as the Chairperson of the United Nations Secretary General's Advisory Board on Water and Sanitation on 12 December 2006.On 10 October 2010, Willem-Alexander and Máxima went to the Netherlands Antilles' capital, Willemstad, to attend and represent his mother, the Queen, at the Antillean Dissolution ceremony.