Boreholes
Borehole depths vary from about 25 to as deep as 200 metres.
Well siting requires geophysical surveys. Mechanised rigs are normally used for drilling. The wells are lined with PVC casing pipes and have a screen.
Drilling is nearly everywhere possible for handpump yield for (1-2 m3/h).
Boreholes provide a year-round water supply and give a good protection against pollution Construction costs are between USD 6,000 to 12,000
