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Water supply and sanitation in Namibia
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Water supply and sanitation in Namibia : ウィキペディア英語版
Water supply and sanitation in Namibia

==Water resources==
Namibia’s climate is hot and dry with erratic rainfall. Within Africa its climate is second in aridity only to the Sahara. Namibia shares several large rivers, such as the Orange River in the South as well as the Zambezi and Okavango Rivers in the North. But these rivers are far away from the population centers and the cost of tapping them for drinking water supply is prohibitive. Only the Cunene River, which is shared with Angola, provides drinking water for four Northern regions of Namibia.
The total assured safe yield of Namibia’s water resources is estimated at 660 million m3/year, distributed as follows: groundwater 300 million m3/year, ephemeral rivers 200 million m3/year, perennial rivers 150 million m3/year and unconventional sources such as treated wastewater 10 million m3/year. Total water consumption in Namibia was estimated at 300 million m3 in 2000. The municipal sector used 73 million m3 (24 percent). Reuse of water is practised in Namibia in many urban areas such as Swakopmund, Walvis Bay, Tsumeb, Otjiwarongo, Okahandja, Mariental, Oranjemund and Windhoek. In Windhoek, reclamation of water for potable reuse has been practised since 1968. The plant could supply 8 000 m3/day, which was about 19 percent of the average daily water demand of the city in 1997. A new reclamation plant with a capacity of 21 000 m3/day was completed in 2002.
Mining in Namibia makes extensive use of water resources. Particularly along the Atlantic coast there is little alternative to extracting groundwater from aquifers. For this reason the first large desalination plant in Sub-Saharan Africa〔(【引用サイトリンク】title=NAMIBIA: First sub-Saharan sea water desalination plant )〕 was inaugurated by Areva on the 16 April 2010. The plant is located near Wlotzkasbaken, 30 km north of Swakopmund. Its maximum capacity is 20 million m3 per year but it will initially supply 13 million m3. Its main projected use is to supply the uranium mine at Trekkopje, located inland.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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