This action research programme aims to address unsafe drinking water in rural Bangladesh caused by arsenic contamination of groundwater. Between 35 and 77 million people have been exposed to dangerous arsenic levels, but implementation of solutions has been slow and inadequate. The aim is to understand past failures and suggest a more successful approach. The findings come from an arsenic mitigation program implemented in several villages which established safe drinking water systems and educated communities through social and technical processes to sustainably manage their water resources and health.