This report is a collection of evidence and brief examples highlighting the effect and benefits of placing women at the core of planning, implementation and operations of water, sanitation and hygiene (WASH) programmes. The experiences also show how women’s empowerment and the improvement of water supply, sanitation facilities and hygiene practice are inextricably linked. One cannot be successfully achieved without the other. The evidence comes from a variety of sources, some of it from recent literature, project reports and evaluations and some from personal correspondence with those involved, where changes are currently happening but not yet documented. Although the report is organised around selected key themes, the multiple impacts of any single intervention or improvement where known are also indicated.