Input allocative efficiencies for operation and maintenance of rural piped water supply systems in highland areas of Vietnam

Q2 Social Sciences Journal of Water and Land Development Pub Date : 2024-04-12 DOI:10.24425/jwld.2024.149128
D. Dinh, Phong Tung Nguyen, Tan Tiep Nguyen, Naomi Carrard, Ngoc Minh Nguyen, Ton Nu Hai Au
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Abstract

Strengthening the functioning of existing rural piped water supply systems is a critical strategy for ensuring household water security, particularly in water-scarce contexts. Improving operation and maintenance (O&M) of the systems is an important area of focus, commonly plagued by poor reliability and functionality over time. From an economic perspective, there is an opportunity to optimise O&M input efficiencies as a foundation for improved management. This paper presented challenges and opportunities to optimise O&M input efficiencies based on an analysis of water supply systems in Vietnam’s highland areas characterised by mountainous terrain and water scarcity. The analysis focused on state-based agencies for O&M given their mandate for restoring the inefficient systems and identified input norms for guidance on how to optimise O&M activities. We applied an input-oriented data envelopment analysis (DEA) model under constant returns to scale assumption to estimate technical, economic and allocative efficiencies. The results identified efficiency levels of 90%, 30% and 33% respectively. The study suggests a 10% reduction in general input amounts and identified efficient input target values reveal potential reduction rates for technical labour (12%), electricity (12%), as well as the technical and economic norms of technical labour (0.86 person- day∙(100 m3)–1 water sold) and electricity (0.53 kWh∙m–3 water sold). The policy implications for O&M state-based agencies include the adoption of input-based contracting mechanisms, while the government is encouraged to approve water tariffs and provide compensation based on input items to promote water service supply as a public good in water- scarce and challenging areas.
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越南高原地区农村自来水供应系统运行和维护的投入分配效率
加强现有农村自来水供应系统的功能是确保家庭用水安全的关键战略,尤其是在缺水地区。改善系统的运行和维护(O&M)是一个重要的重点领域,随着时间的推移,系统的可靠性和功能性普遍较差。从经济角度看,有机会优化运行和维护的投入效率,为改善管理奠定基础。本文基于对越南高原地区供水系统的分析,介绍了优化运行与维护投入效率所面临的挑战和机遇,越南高原地区地形多山,水资源匮乏。鉴于国家机构的任务是恢复低效系统,因此分析的重点是国家机构的运行与维护,并确定了投入规范,以指导如何优化运行与维护活动。在规模收益不变的假设条件下,我们采用了以投入为导向的数据包络分析(DEA)模型来估算技术、经济和分配效率。结果发现效率水平分别为 90%、30% 和 33%。研究建议一般投入量减少 10%,确定的高效投入目标值显示了技术劳动力(12%)、电力(12%)以及技术劳动力(0.86 人-日-(100 立方米)-1 售水量)和电力(0.53 千瓦时-米-3 售水量)的潜在减少率。对基于国家的运行与维护机构的政策影响包括采用基于投入的合同机制,同时鼓励政府批准水价,并根据投入项目提供补偿,以促进供水服务作为缺水和具有挑战性地区的公共产品。
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来源期刊
Journal of Water and Land Development
Journal of Water and Land Development Social Sciences-Development
CiteScore
2.10
自引率
0.00%
发文量
0
审稿时长
14 weeks
期刊介绍: Journal of Water and Land Development - is a peer reviewed research journal published in English. Journal has been published continually since 1998. From 2013, the journal is published quarterly in the spring, summer, autumn, and winter. In 2011 and 2012 the journal was published twice a year, and between 1998 and 2010 it was published as a yearbook. . Papers may report the results of experiments, theoretical analyses, design of machines and mechanization systems, processes or processing methods, new materials, new measurements methods or new ideas in information technology. Topics: engineering and development of the agricultural environment, water managment in rural areas and protection of water resources, natural and economic functions of grassland.
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