In Kitui County, Kenya, an information gap exists on water coverage and quality of water service delivery for a large segment of the county population. To fill this gap, the Sustainable WASH Systems Learning Partnership (SWS) supported the University of Oxford to undertake a water audit in seven sub-counties from November to December 2017. The water audit located major rural water infrastructure and collected information on installation and operational performance to inform county planning, investment, institutional development, and dialogue on sustainability.