scholarly journals Water Supply Delivery Failures—A Scenario-Based Approach to Assess Economic Losses and Risk Reduction Options

Water ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1746 ◽  
Author(s):  
Karin Sjöstrand ◽  
Andreas Lindhe ◽  
Tore Söderqvist ◽  
Lars Rosén
Keyword(s):  
Water Supply ◽  
Risk Reduction ◽  
Cost Benefit Analysis ◽  
Full Range ◽  
Cost Benefit ◽  
Economic Losses ◽  
Water Supply Systems ◽  
Additional Information ◽  
Wide Range ◽  
Water Scarce

Access to a reliable water supply is central for a well-functioning society. However, water supply systems are subject to a wide range of threats which may affect their ability to provide water to society. This paper presents a novel risk assessment approach that enables thorough analyses of economic losses and associated uncertainties under a range of water supply disruption scenarios. The purpose is to avoid sub-optimization when prioritizing between risk reduction measures, by integrating the full range of possible outcomes from low to high probability events. By combining risk analysis with cost-benefit analysis, additional information is provided on measures for leveraging investments in managing and reducing the risks. This enables the identification of the most economically profitable risk reduction alternatives and enables decision makers to build strategic capacity for operating in difficult and uncertain futures. The presented approach is exemplified on the island of Gotland, one of the most water scarce areas of Sweden.

scholarly journals Cost–Benefit Analysis of Leakage Reduction Methods in Water Supply Networks

Water ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 195
Author(s):  
Suvi Ahopelto ◽  
Riku Vahala
Keyword(s):  
Sensitivity Analysis ◽  
Water Supply ◽  
Water Loss ◽  
Cost Benefit Analysis ◽  
National Level ◽  
Cost Benefit ◽  
Water Supply Systems ◽  
Benefit Analysis ◽  
Leakage Reduction ◽  
Reduction Methods

Reducing water loss from water supply systems is often regarded as one of the most important ways to improve the resource efficiency of water supply services. However, the costs and impacts of water loss reduction efforts need to be weighed against the benefits to define the optimal water loss target level. To this end, we conducted a cost–benefit analysis of three investment-based leakage reduction methods: district metering, pressure reduction, and pipe renovations. Furthermore, we conducted uncertainty and sensitivity analysis to determine the most relevant data for leakage analysis and policymaking on a national level. The results indicate that water loss management might not be directly cost-beneficial to utilities operating with moderate leakage levels. Neither leakage percentage nor the Infrastructure Leakage Index (ILI) were suitable for leakage target setting for the Finnish utilities. The costs of investing in district metering or renovations were the most influential factors in the sensitivity analysis, but the results showed that the estimated values were sufficiently accurate for assessing leakage policies.

scholarly journals Energy implications of the millennium drought on urban water cycles in Southeast Australian cities

2017 ◽  
Vol 18 (1) ◽  
pp. 214-221
Author(s):  
K. L. Lam ◽  
P. A. Lant ◽  
S. J. Kenway
Keyword(s):  
Water Supply ◽  
Water Conservation ◽  
Energy Use ◽  
Water Supply Systems ◽  
Urban Water ◽  
Demand Side ◽  
Related Energy ◽  
Millennium Drought ◽  
Wide Range ◽  
Supply Systems

Abstract During the Millennium Drought in Australia, a wide range of supply-side and demand-side water management strategies were adopted in major southeast Australian cities. This study undertakes a time-series quantification (2001–2014) and comparative analysis of the energy use of the urban water supply systems and sewage systems in Melbourne and Sydney before, during and after the drought, and evaluates the energy implications of the drought and the implemented strategies. In addition, the energy implications of residential water use in Melbourne are estimated. The research highlights that large-scale adoption of water conservation strategies can have different impacts on energy use in different parts of the urban water cycle. In Melbourne, the per capita water-related energy use reduction in households related to showering and clothes-washing alone (46% reduction, 580 kWhth/p/yr) was far more substantial than that in the water supply system (32% reduction, 18 kWhth/p/yr). This historical case also demonstrates the importance of balancing supply- and demand-side strategies in managing long-term water security and related energy use. The significant energy saving in water supply systems and households from water conservation can offset the additional energy use from operating energy-intensive supply options such as inter-basin water transfers and seawater desalination during dry years.

Checking The Hydraulic Efficiency and Improving Safety of the Internal Water Supply 

2018 ◽  
Vol 20 (2) ◽  
pp. 121-125
Author(s):  
Sarka Krocova ◽  
Karla Barcova
Keyword(s):  
Water Supply ◽  
Water Supply Systems ◽  
Safety Hazard ◽  
Industrial Facilities ◽  
Internal Water ◽  
Operational Capabilities ◽  
Wide Range ◽  
Hydraulic Conditions ◽  
Industrial Zones ◽  
Supply Systems

Water management systems in industrial facilities, industrial zones, hospitals and other internal water systems relatively frequently fail to meet the intended purpose for which they were built when an extraordinary event occurs. They may even pose a safety hazard. The causes of this condition may be of internal or external origin. Given that internal water supply systems of large premises always have a multipurpose character, i.e. to provide enough drinking water for drinking and sanitation purposes and also as a source of fire water for the fire safety of buildings, they must meet a wide range of hydraulic conditions and technical-operational capabilities. By what means and methods it is possible to achieve the desired state in economically-acceptable dimensions, while maintaining all the necessary hydraulic capabilities of the supply points of drinking and fire water, is briefly described in this article.

Economic cost benefit analysis of climate change adaptation for infrastructure

2011 ◽  
Vol 51 (2) ◽  
pp. 687
Author(s):  
Michael Nolan
Keyword(s):  
Climate Change ◽  
Water Supply ◽  
Climate Adaptation ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Climate Change Impacts ◽  
Economic Cost ◽  
Economic Modelling ◽  
Benefit Analysis ◽  
Lessons Learnt

This paper explores the lessons learnt from the Optimising Adaptation Investment projects for the Department of Climate Change and Energy Efficiency–it includes coastal settlements, water supply and rail infrastructure case studies. These projects are the first of their kind in Australia and are considered internationally as a leading example of economic cost benefit analysis. They have been used effectively to inform decision making on specific adaptation responses to climate change risks to existing and new infrastructure. The lessons learnt will be explored for offshore platforms, ports, rail, road, drainage, tailings dams, mine facilities, water, and power supply, which includes the following elements: What decision makers require to make informed decisions under the uncertainty of climate change impacts. Reducing the uncertainty through economic modelling and cost benefit analysis. Optimising the right timing and scale of various adaptation options. Benefiting from oil and gas infrastructure adaptation opportunities. To further support the elements above, the applied process for integrating climate adaptation into infrastructure planning, design and operation will be illustrated by AECOM project experiences. AECOM has completed more than 60 significant climate change risk and adaptation projects for mines, ports, water supply and treatment, energy generation, transmission and distribution, rail, road, and coastal settlements in Australia, including the report: Climate Change Impacts to Infrastructure in Australia for the Garnaut Climate Change Review.

Tackling conservation/welfare conflicts in the management of wild animals

2002 ◽  
Vol 8 (1) ◽  
pp. 36 ◽  
Author(s):  
James K. Kirkwood
Keyword(s):  
Review Process ◽  
Biological Diversity ◽  
Cost Benefit Analysis ◽  
Species Conservation ◽  
Cost Benefit ◽  
Ethical Review ◽  
Benefit Analysis ◽  
Wide Range ◽  
Ethical Review Process

During the last century there were two distinct and profound changes in attitudes to animals. First, it became widely understood that human activities and anthropogenic changes to the environment present a serious threat to biological diversity. In response to this many programmes to protect habitat and to conserve species have been launched. Second, advances in various fields of science led to a strengthening belief in many societies that a wide range of animals may have the capacity for consciousness and thus suffering. This has led to growing concern for the welfare of animals - the quality of their lives - and to the development of extensive bodies of welfare legislation in many countries. Concerns for species conservation and concerns for individual animal welfare do not always pull in the same direction. Around the world, conflicts are becoming commonplace between those who believe it can be justifiable to compromise the interests of individual animals in order to prevent species extinctions and those who do not. Such conflicts may be addressed and hopefully avoided or minimized through use of an ethical review process in which conservation benefits and welfare costs are carefully identified, considered and weighed in a cost/benefit analysis. A second function of this review process is to ensure that, where the decision is taken to proceed with a conservation programme that may adversely affect the welfare of some individuals, all necessary steps are taken to minimize these threats and their possible impacts.

Costing for ALARP

2005 ◽  
Author(s):  
Sirous F. Yasseri ◽  
Peter Menhennett
Keyword(s):  
Risk Reduction ◽  
Cost Benefit Analysis ◽  
Health And Safety ◽  
Cost Benefit ◽  
Benefit Analysis ◽  
Safety Level ◽  
Risk Reduction Measure ◽  
The Uk ◽  
Design Options ◽  
The Cost

A key principle for achieving Tolerable Risk under the UK Health and Safety Executive’s (HSE) approach is the reduction of risks to “As Low As Reasonably Practicable” or ALARP. This principle is founded on the ideal of reducing risks to a point of diminishing returns where additional risk reduction would cost “disproportionally” more than the risk reduction benefit achieved. The HSE approach of estimating the degree of disproportionality between the cost and benefits associated with a potential risk reduction measure is a variation of the Cost Effectiveness approach to ALARP Evaluation. A probabilistic cost-benefit analysis method is outlined for evaluating design options and establishing whether the conditions of ALARP are met. This paper demonstrates the value of probabilistic cost-benefit analysis for the selection of a target safety level and also presents an example of its practical application by way of a case history.

Cost–benefit and water resources policy: a survey

Water Policy ◽  
2011 ◽  
Vol 14 (2) ◽  
pp. 250-280 ◽  
Author(s):  
Frank A. Ward
Keyword(s):  
Water Policy ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Benefit Analysis ◽  
Trade Offs ◽  
Wide Range ◽  
Recent Developments ◽  
The Difference ◽  
Policy Cost ◽  
The Right

This paper reviews recent developments in cost–benefit analysis for water policy researchers who wish to understand the applications of economic principles to inform emerging water policy debates. The cost–benefit framework can provide a comparison of total economic gains and losses resulting from a proposed water policy. Cost–benefit analysis can provide decision-makers with a comparison of the impacts of two or more water policy options using methods that are grounded in time-tested economic principles. Economic efficiency, measured as the difference between added benefits and added costs, can inform water managers and the public of the economic impacts of water programs to address peace, development, health, the environment, climate and poverty. Faced by limited resources, cost–benefit analysis can inform policy choices by summarizing trade-offs involved in designing, applying, or reviewing a wide range of water programs. The data required to conduct a cost–benefit analysis are often poor but the steps needed to carry out that analysis require posing the right questions.

scholarly journals Estimating the Production Losses Due to Cystic Echinococcosis in Water Buffaloes (Bubalus Bubalis) in Turkey

2021 ◽  
Author(s):  
savaş sarıözkan ◽  
Mehmet Küçükoflaz
Keyword(s):  
Cystic Echinococcosis ◽  
Water Buffalo ◽  
Cost Benefit Analysis ◽  
National Level ◽  
Public Health Problem ◽  
Cost Benefit ◽  
Economic Losses ◽  
Published Data ◽  
Water Buffaloes ◽  
Production Losses

Abstract Cystic echinococcosis (CE), is a neglected zoonotic parasitic disease among livestock diseases, that causes low productivity (meat, milk, fecundity), profitability and significant economic losses in water buffalo farms and serious public health problem all over the world. This study aimed at estimating the direct (condemned offal) and indirect (meat, milk, and fecundity losses) production losses due to cystic echinococcosis (CE) in water buffaloes in Turkey. A spreadsheet loss model was constructed, and the mean prevalence rate of CE was accepted as 16.4% (3.8% in males and 21.7% in females) in water buffaloes in Turkey. The annual financial losses were estimated with official and previously published data under expected (mean value), optimistic (lowered by 10%), and pessimistic (increased by 10%) scenarios with the prices current in 2020. The production losses in an infected male and female water buffalo were estimated at $54.3 and 105.3, respectively. The nation-wide losses due to CE were estimated at $1.7 million (1.4-2.1) for water buffaloes annually. In conclusion, farmers, policymakers, and the public need to be informed about the risks and financial impact of CE, and control/eradication programs should be included in policies of government at the national level after a cost/benefit analysis.

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