Environmental problems to health, quality of life, and longevity of people

Environmental problems represent major threats to the health, quality of live and longevity of people residing in all countries, but arguably more so in the developing world. What are some of the mortality risk factors and burdens associated with inadequate supplies of clean water and poor sanitation that disproportionately affect residents of developing countries? do you think the risk to quality of life and longevity associated with these factors are greater for children or adults? provide an example or statistic from your research to illustrate your point.