Water Tanks, Kiosks & Boreholes
In the areas where the WfK projects are located, there is often little surface water. Boreholes are drilled in locations where sonar equipment indicated the rock is less dense, here water will collect at 45 to 90m below ground level. Pipes are then installed to bring water to the surface. Most commonly hand pumps are used to draw the water up through the borehole to fill containers. The cost of drilling a borehole and providing a hand pump is over £3,000 to £4,000. So few boreholes can be provided and people often have to walk a long way to get water and may have to queue when they get there. This may mean they use contaminated surface wells or streams instead.
Where there was scope to pipe the water to individual houses it was decided at the outset that water should be distributed from the borehole to taps within 250m of each house, the World Health Organisation (WHO) standard. This involves pumping the water to tanks, using solar power, where mains electricity is not available. The tanks are usually sited on stands 5 to 8 metres above the ground. The water is then gravity fed to taps.