WHO TN2: Cleaning and rehabilitating boreholes
Water · Purification & Treatment
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TECHNICAL NOTES ON DRINKING-WATER, SANITATION AND HYGIENE IN EMERGENCIES 2 Cleaning and rehabilitating boreholes Boreholes are resistant to many forms of natural and man- made disasters. Although the components above ground may be damaged, the narrow opening at the top of the borehole often prevents contamination of the water source or damage to the pump components below ground. The main exception to this is damage caused by earthquakes, which can be greater below ground than what can be seen on
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