Increased emphasis on efficiency improvements has brought the benefits of internal savings and improved service deliveries of water supplies to the developed countries. However, water supply services in developing countries often exhibit large inefficiencies making it difficult to expand coverage or improve supply services. A comparative assessment of efficiencies in the developed and developing countries is therefore essential to estimate the actual lag that developing countries typically experience, and to arrive at an estimate of their efficiency improvements. This manuscript makes an effort in this direction by undertaking a cross-country benchmarking study on the level of inefficiencies prevailing in Indian urban water supply services (IUWSS) relative to the utilities in the UK-England and Wales. This manuscript uses data envelopment analysis approach to measure relative efficiencies of water supplies for a sample of 30 water utilities in India and the UK-England and Wales for the year 2015. The results indicate that there exist significant technical and scale inefficiencies in water supply operations of Indian municipalities compared with the UK-England and Wales. DEA results also show a significant scope for savings with respect to operating expenditures and non-revenue water, if Indian utilities were to adopt the best practices and managerial tools of the utilities in the UK-England and Wales. Further, it was found that IUWSS need a restructuring of their municipalities to become more efficient. This manuscript discusses the above results in the context of policy implications and suggests few mechanisms that are relevant from a developing country perspective for possible improvement in water supply services.
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http://dx.doi.org/10.1007/s00267-020-01333-1 | DOI Listing |
Environ Res Food Syst
March 2025
Centre on Climate Change and Planetary Health, London School of Hygiene & Tropical Medicine, London, United Kingdom.
Dietary modification has the potential to improve nutritional status and reduce environmental impacts of the food system. However, for many countries, the optimal composition of locally contextualized healthy and sustainable diets is unknown. The Gambia is vulnerable to climate-change-induced future water scarcity which may affect crop yields and the ability to supply healthy diets.
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December 2024
Departments of Water Supply and Environmental Engineering, Arba Minch Water Technology Institute (AWTI), P. O. Box 21, Arba Minch, Ethiopia.
Anaerobic digestion technology is one of the most paramount eco-friendly wastes to energy conversion processes. This study was conducted to characterize the physicochemical properties of khat and Cow dung along with examining the bio-methane production potential and substrate conversion rate of feedstock through seven triplicate proportions of laboratory scale batch anaerobic reactors for a 27 days digestion period under mesophilic conditions. The maximum and minimum bio-methane yield of 283.
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December 2024
Cranfield University, College Road, Cranfield, Bedfordshire MK43 0AL, UK.
This study utilizes flow cytometry (FCM) to evaluate the high nucleic acid (HNA) and low nucleic acid (LNA) content of intact cells for monitoring bacterial dynamics in drinking water treatment and supply systems. Our findings indicate that chlorine and nutrients differently impact components of bacterial populations. HNA bacteria, characterized by high metabolic rates, quickly react to nutrient alterations, making them suitable indicators of growth under varying water treatment and supply conditions.
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January 2025
Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29, Prague 6, Czech Republic.
Human activities result in sediment accumulation, so the reservoirs gradually lose their functionality, impacting their ability to manage large flood inflows, supply water, and generate hydroelectric power. Therefore, periodic removal of sediments from water reservoirs is essential to maintain functionality. Notwithstanding, the management of dredged sediments is a multifaceted process that involves careful consideration of environmental, regulatory, and economic factors to ensure their responsibility and sustainable handling.
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December 2024
MOE Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science & Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China. Electronic address:
Lipids offer high energy recovery potential during anaerobic digestion (AD), but their hydrolysis generates long-chain fatty acids (LCFAs), which are difficult to biodegrade. The introduction of microbial electrolysis cells has been widely recognized as a promising strategy to enhance AD. However, it is still under debate whether the electrical circuit needs to be connected, as certain electrodes with large specific surface areas have been reported to enhance direct interspecies electron transfer (DIET) without requiring an external power supply.
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