In this episode, we are looking at the impact measurement side of water and sanitation businesses.
The host, Andy Narracott, is joined by Tono Aguilar, President of CASSA, a social enterprise providing sustainable, social housing in Guatemala. And Paul Gunstensen, Director of WASH at the Stone Family Foundation. 

The episode covers:

• Why you should measure the impact of your social enterprise
• Using IRIS indicators of impact, and mapping them onto the SDGs
• What the Stone Family Foundation looks for in impact measurement
• How to choose what to measure
• How the SFF evaluates each investment opportunity 
• Advice for other social entrepreneurs