Willingness to Pay for Improved Urban Domestic Water Supply System: The Case of Hanoi, Vietnam
Willingness to Pay for Improved Urban Domestic Water Supply System: The Case of Hanoi, Vietnam
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DOI：
10.3390/w14142161
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发表时间：
2022-07
期刊：
影响因子：
3.4
通讯作者：
Nuong Thi Bui;S. Darby;Trang Quynh Vu;Jean Margaret R. Mercado;T. T. P. Bui-T.;Komali Kantamaneni;T. T. Nguyen-T.;T. Truong;Hue Thi Hoang;D. Bui
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文献类型：
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作者：
Nuong Thi Bui;S. Darby;Trang Quynh Vu;Jean Margaret R. Mercado;T. T. P. Bui-T.;Komali Kantamaneni;T. T. Nguyen-T.;T. Truong;Hue Thi Hoang;D. Bui
获得可靠和安全的家庭用水供应是世界上许多发展中国家面临的一项严重挑战。在越南首都河内，由于城市人口不断增加，地表水和地下水资源受到严重污染，市政府在以可持续的方式提供充足的水方面面临着许多困难，但这也是由于缺乏对供应系统进行投资的资源。本研究的目的是调查水用户的意愿支付改善河内的生活供水系统。基于对402名受访者的调查，采用条件价值评估方法，探讨了公民为改善城市供水而支付的意愿。结果显示，河内的城市社区（超过90%）普遍满意他们的供水量，但往往不满意其质量，与80%的受访者使用先进的净水器饮用和烹饪前。受访者还关注服务的整体可靠性，40%的受访者表示他们没有得到检查和维护服务。根据调查结果，开发了一个WTP回归模型。平均支付意愿为281，000越南盾/户/月（按1美元兑约23，000越南盾的汇率计算，约为12.2美元），相当于2019年底平均家庭收入的1.4%，表明河内公民每月支付水费的承受能力。
Access to a reliable and safe domestic water supply is a serious challenge for many developing countries worldwide. In the capital of Vietnam, Hanoi, the municipal government is facing a number of difficulties in providing sufficient water in a sustainable manner due to the increasing urban population and the serious pollution of both surface and groundwater resources, but this is also due to a lack of resources to invest in the supply system. This study aimed to investigate water users’ willingness to pay for the improvement of Hanoi’s domestic water supply system. A contingent valuation process based on a survey of 402 respondents was used to explore citizens’ willingness to pay (WTP) for the improvement of their urban water supply. The results show that Hanoi’s urban communities (more than 90%) were generally satisfied with the quantity of their water supply, but tended to be dissatisfied with its quality, with 80% of the respondents using advanced water purifiers before drinking and cooking. Respondents were also concerned about the overall reliability of the service, with 40% of respondents indicating that they received no check and maintenance service. A WTP regression model was developed based on the survey findings. The average WTP is 281,000 dong/household/month (approximately 12.2 USD at the exchange rate of 1 USD to about 23,000 VND), equivalent to 1.4% of the average household income at the end of 2019, indicating the level of affordability of monthly water payments among Hanoi citizens.