Some of the upcoming challenges for water and sanitation in developing countries are:
1) Climate change adaptation and its effects on groundwater potential-it is affecting the quantity of water abstracted and the cost of installing deep boreholes-there is a surge in pricing of materials and the per capita costs are skyrocketing.
We are seeing more dry wells in areas that were previously regarded as high yielding;
2) Population growth is affecting the water supply available- we are seeing and anticipating reduction in available water to people in developing countries as populations increase.
This will greatly reduce the per capita availability and increase on diarrhea related diseases for under 5s