In this episode of the WaSH Policy Research Digest podcast, Clarissa Brocklehurst talks to Guy Hutton, Senior Advisor in the WaSH Section of UNICEF in New York about a recently published report on the measurement of WaSH affordability.  Guy explains the data sources we have available, their strengths and weaknesses, the various ways to analyze WaSH affordability, and the reasons it is so important for decision makers and policy makers to have good tools to measure and understand affordability in the sector.