Safe, accessible water is crucial to preserving life. Water fuels our bodies, cleans our homes and clothes, drives industry, generates energy and irrigates the crops which feed the population. Growth in the world’s population and industrialisation, together with climate change and demographic shifts, all lead to an increased demand for water. Annually, four billion people experience severe water scarcity . Additionally, 663 million people lack ready access to improved sources of drinking water (World Water Development Report 2016). Women and girls are disproportionately affected – instead of earning an income or attending school, they are forced to be the primary water carriers for their families.