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Sludging - Rota sludge

No change in size, 05:25, 17 January 2013

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==Construction, operations and maintenance==

[[Image:Diagram of a rota sludge.jpg|thumb|right|200px175px|Diagram of a rota sludge]][[Image:Rota_sludge_well_drilling.PNG|thumb|right|200px175px|Drilling a 20 m deep well in Chinandega, Nicaragua, with the Rota-sludge method. Photo: Netherlands Water Partnership.]][[Image:Rota sludge drill bit.jpg|thumb|right|200px175px|Rota sludge drill bit]]

Cow dung is mixed with water to create a very low cost drilling fluid. It may take several weeks after the drilling is finished for the pathogens (bacteria) to die and disappear completely out of the well.

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