The World Development program at the Waterloo Foundation offers grants in subject areas that include water, sanitation, and hygiene (WASH). The Foundation gives funding priority to UK-based charities, many of whom work in close partnership with NGOs based in the countries in which they operate. Waterloo will also accept applications from organizations in developing countries if they can supply acceptable references in the UK. Grants are usually between 1-3 years for a total of over £50 thousand, although very occasionally the Foundation will provide grants of over £100 thousand per year. The deadlines for the WASH grants are 14 May 2017 (Round 1) and 19 November 2017 (Round 2). Link