首页> 外文期刊>International Journal of Disaster Risk Science >Households’ Willingness to Pay for Disaster Resilient Safe Drinking Water Sources in Southwestern Coastal Bangladesh
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Households’ Willingness to Pay for Disaster Resilient Safe Drinking Water Sources in Southwestern Coastal Bangladesh

机译:孟加拉国西南沿海地区家庭愿意为防灾抗灾安全饮用水源付费

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Nonfunctionality of engineered water sources after two catastrophic cyclones—Sidr in November 2007 and Aila in May 2009—created acute scarcity of safe drinking water in coastal Bangladesh. The objective of this study was to estimate households’ willingness to pay (WTP) for disaster resilient water sources in Dacope upazila of Khulna District in southwestern coastal Bangladesh. By applying the double bounded dichotomous contingent valuation method to a dataset of 250 randomly selected households, we found that the mean WTP is BDT 263 and that inaccessibility to functional safe drinking water sources is the most significant determining factor of households’ WTP. Projecting mean WTP for a disaster resilient water source project in the study area, we measured a present value of aggregate WTP over project’s life span worth about BDT 624 (USD 7.37) million, which is about 14.30 times the present value of project’s aggregate establishment and maintenance cost. However, charging the local inhabitants a water tariff at mean WTP would lead to the exclusion of around 50% of the people from getting access to the improved water services or create a free riding problem. Through simulation exercises this study determined that the socially optimal water tariff is BDT 50 per month. This tariff would not only generate revenue of more than five times the project cost but would also create access to disaster resilient improved drinking water sources for almost 99% of the people.
机译:经过两次灾难性的飓风(2007年11月的锡德尔(Sidr)和2009年5月的艾拉(Aila)),工程水源无法正常工作,在孟加拉国沿海地区造成了安全饮用水的严重短缺。这项研究的目的是评估孟加拉国西南海岸的库尔纳区的达科普·upazila的家庭支付抗灾水的意愿(WTP)。通过对250个随机选择的家庭的数据集应用双边界二分条件的估值方法,我们发现WTP的平均值为BDT 263,无法获得功能安全的饮用水源是家庭WTP的最重要决定因素。预测研究区域的抗灾水源项目的平均WTP,我们测量了项目生命周期内的总WTP的现值,约为624迪拉姆(7.37美元)百万,约为该项目总建设现值的14.30倍。维修费用。但是,以平均水价向当地居民收取水费将导致大约50%的人无法获得改善的水服务或造成免费乘车问题。通过模拟练习,该研究确定了社会最优水费标准为每月50迪拉姆。这项关税不仅将产生超过项目成本五倍的收入,而且还将为将近99%的人们创造抗灾能力得到改善的饮用水源。

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