A growing body of research has confirmed the key role that point-of-use water quality interventions can play in reducing diarrhoeal disease in a cost-effective manner. This document reviews the case for managing water quality in the home, describes the Network and its objectives, gives a brief overview of low-cost technologies, and outlines some of the implementation challenges that lie ahead. This document can be applied in emergency and disaster situations. Document available in English, French and Spanish. Search keywords: earthquake, disaster.