Changes

==Field experiences==

[[Image:borehole and tank.jpg|thumb|right|200px|A successful borehole in Machakos. Photo: E. Nissen-Petersen, Kenya]]

A recent report for the Ministry of Water by PEM Consultants states that only 60 drilled boreholes are successful. Although Boreholes Contractors cannot guarantee anything, they must be paid in full for their drilling. The borehole seen in the photo (on the right) is 104 metres deep and supplies 20,000 litres of fresh water in an hour, which is sold for Ksh 3 per 20 litres, which is Ksh 3,000 (US$ 35) per hour. A successful borehole as this one costs about Ksh 3 million (US$ 35,000), inclusive of casing, pump, elevated tank and pump house.