Sand Dams were invented by the Romans some 2,000 years ago, to provide clean water for the territories they conquered in Europe and beyond.
Their use has now become a staple supply of safe clean water in many arid areas of Africa. The dams are built by village self-help groups on dry river beds. The dams fill with sand over a couple of rainy seasons and this helps store water and filter it. Safe drinking water can then be drawn off for human & animal consumption and in many places to provide irrigation for crops. This produce is either sold or used locally to help sustain the village.
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