Safe and adequate water supply is a vital element to preserve human health; however, access to clean water is limited in many developing countries. Furthermore, improved water sources are often contaminated with fecal matters and consumption of unsafe water poses a great public health risk. This...

We analyze the impact of access to piped water on human capital formation as measured by test scores from standardized school exams at Brasilian primary schools. We find a positive and significant effect of around 11 percent of the standard deviation of mean test scores. The effect of piped...