摘要:A cost-benefit analysis can provide insight into the relative contri- bution of these livelihood, environmental and health benefits. Public health programs advocating water treatment methods and improved cookstoves can vary greatly in quality, scale and impact, from small community driven projects to large scale government programs, from non-profit to for-profit models, and from subsidized to market based funding mechanisms. Because of the high degree of variability of im- pacts between these program models, understanding a particular pro- gram’s ability to deliver benefits to the target population in a cost effective and sustainable way is essential to inform future interventions. This paper analyzes one such program, the DelAgua Health and Ministry of Health Tubeho Neza program in rural Rwanda, through the compar- ison of the program costs, and the potential benefits of the program related to fuelwood savings, time savings, environmental and health impact.