Collecting water from distant, unsafe sources can take several hours a day. In many cultures, women are responsible for running their household so collecting water is their responsibility.
Yet we know that even just a few years of basic education result in women having smaller, healthier, better educated families, which are more able to work their way out of poverty.
Without water in school, dehydration often sets in and it becomes hard to concentrate.
During adolescence, girls suffer most without a clean, private place to go to the toilet and manage their periods. Without separate toilets, handwashing facilities and somewhere to dispose of sanitary napkins, they are likely to miss school or drop out entirely.