It is well known that water treatment at the household level can lead to dramatic improvements in drinking water quality. But does Household Water Treatment and Safe Storage (HWTS) also have global relevance? What are the potential treatment solutions and how do they function? Is there a standard strategy for successful HWTS implementation, or can we identify key components which make programs more likely to succeed? In this course you will learn about the most important water treatment methods at household level, successful implementation strategies and about assessing the impact of HWTS. MOOC SERIES SANITATION, WATER AND SOLID WASTE FOR DEVELOPMENT : This course is one of four in the series Sanitation, Water and Solid Waste for Development". FRAN AIS: Dans ce MOOC, vous allez apprendre les plus importantes m thodes de traitement de l'eau au niveau des m nages, les strat gies pour une mise en uvre r ussie et l valuation de l impact du traitement et stockage s r de l'eau domicile. ESPA OL: Aprende acerca de los m todos m s importantes de tratamiento de agua a nivel domiciliario, de estrategias de implementaci n eficientes y de la evaluaci n del impacto del tratamiento dom stico y almacenamiento seguro del agua.