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Underground tank

No change in size, 20:03, 13 April 2012
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Where access to groundwater is limited, [[Rainwater harvesting|rainwater harvesting]] in underground tanks can be an effective and low-cost alternative. Water stored in the wet season can be used in the dry season and lifted from the tank with a [[rope pump]] or with a [[Deep well pump|deep well pump]], which can elevate water up to 30 m.
These tanks can be constructed of concrete blocks. The tanks are partly (1.5 m) built below the soil surface. These tanks can store up to 20 ,000 liters of water, used for domestic use, cultivation.
With regard to the concrete block tanks, 40 community water tanks (supporting a few families each) were implemented successfully. Following this success, another 80 concrete block tanks will be built at household level.
Winona
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