water assessment Articles
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Basic principles for urban water value assessment and price setting towards its full cost recovery – pinpointing the role of the water losses
This paper attempts to set the basic methodological framework for an integrated action plan (in terms of successive steps) to be developed that will guarantee the reliable calculation of the Full Water Cost (FWC), as defined by the WFD 2000/60/EC. Towards this goal, the crucial role of the water losses occurring in a water distribution system is demonstrated. This will help an effective and ...
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Using performance indicators as a water loss management tool in developing countries
Water utilities in developing countries are facing the challenges of substantial water losses in their water supply systems. In order to deliver water to their customers more efficiently and effectively, utilities must be able to measure and assess the performance of their water supply systems against set management objectives. However, water loss assessment is still not widely practised in ...
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The 21st Century Water Utility Initiative: how to boost operational performance of water utilities by up to 20%
The 21st Century Water Utility Initiative is a powerful and innovative approach to help water utilities assess their current operational performance, identify improvement actions and track impact year after year. First success cases suggest that cost reductions range from 10 to 20% within 1–3 years, with improved customer satisfaction. This approach can help water utilities in ...
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Towards a Service Quality Model for Water Utilities
Regulation of water utilities is often achieved through “yard-stick competition”, where the service quality of monopolistic service providers is compared with peer organisations in the same jurisdiction (Braadbaart, 2007; Lin & Berg, 2008). Regulatory models for water utilities focus on measuring business performance through a series of indicators (Braadbaart, 2007; Byatt, 2013; ...
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Assessment of water loss in Harare, Zimbabwe
A major challenge facing water utilities is the high level of water losses, which affects the financial viability and adequacy of water in the system. A study was carried out from January to May 2012 to characterize water losses in selected areas of Harare, Zimbabwe. Assessment of the contribution of water leakage to total water loss was carried out through water audits in four selected ...
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Study of an evaluation method for water resources carrying capacity based on the projection pursuit technique
It is of great significance to establish a scientific and reasonable water resources carrying capacity evaluation system and evaluation method on the basis of studying the interdependence and mutual relations of water resources, society, economy and the ecological environment. This can guide water resources utilization and economic and social development planning, and promote the sustainable ...
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Economic effects of the consolidation of water utilities in Japan
Water utilities are affected by economies of scale. However, in Japan most water utilities are small-scale water services. Therefore, they face enormous difficulties in terms of financial and personnel resources. To take advantage of economies of scale, the consolidation of water utilities has been promoted since 1965 by Japanese water authorities. The measure has been successful to some ...
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Assessing Water system revenue risk: Considerations for market Analysts
Water utilities are on the brink of extraordinary investments to replace aging infrastructure— the Environmental Protection Agency estimates that by 2030, capital expenditures of more than $300 billion will be needed to safeguard drinking water. Yet this investment comes at a time when Americans’ water use habits are changing1—resulting in considerable uncertainty for water ...
By Ceres
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Risk assessment study for water supply network using GIS
In recent years, contamination of water in water distribution systems (WDS) has been recognized as a major cause of waterborne diseases. Owing to old and deteriorated pipes, and the presence of pollution sources in contact with the supply line, water boards often decide to replace the network in the interests of public health. This being a cost-intensive and time-consuming programme, decision ...
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Bio-plastic (poly-hydroxy-alkanoate) production from municipal sewage sludge in the Netherlands: a technology push or a demand driven process?
Valorisation of components from municipal ‘waste’ water and sewage sludge gets more and more attention in order to come to a circular economy by developing an efficient ‘waste’ to value concept. On behalf of the transition team ‘Grondstoffenfabriek’ (‘Resource factory’) a preliminary research was performed for all the Dutch water boards to assess the technical and economical feasibility of ...
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A utility-tailored methodology for integrated asset management of urban water infrastructure
This paper presents the integrated methodology for infrastructure asset management (IAM) developed in AWARE-P, an R&D project aimed at producing adequate and effective support tools for assisting urban water utilities in decision making and rehabilitation planning (www.aware-p.org). The proposed methodology addresses all three planning and decisional levels (strategic, tactical and ...
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Micro-component survey of residential water consumption in Hanoi
Daily total water consumption per capita has been used as a basic unit for the future planning of water supply for domestic use. However, for innovative water utilization designs that consider various scenarios, including the effects of policy direction and global warming, and more strategic and efficient water use, it is absolutely essential to consider water usage divided by residential ...
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Radon-222 from different sources of water and the assessment of health hazard
Water samples collected from different sources were analysed for radon concentrations in order to evaluate the health effect associated with radon in water. The radon concentrations were in the range of 3.56–98.57, 0.88–25.49, 0.73–1.35 and 0.24–1.03 Bq.L−1 for borehole, well, packaged and utility water, respectively. Samples from boreholes had the highest radon concentrations with about 67% ...
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The Benefits of Portable Water Quality Detectors
Introduction: Access to safe and clean water is essential for human health and well-being. However, water quality can vary significantly, and contaminants can pose serious risks to human health. Portable water quality detectors have emerged as valuable tools for assessing water safety and ensuring clean water in various settings. This article aims to explore the benefits of portable water quality ...
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Introducing layer of protection analysis for water safety risk assessments
In pursuing their mandate of providing good and safe drinking water, water system operators and asset owners work continuously towards developing and maintaining the trust and confidence of their customers. The goal of developing and maintaining customer trust has led to an increased emphasis in the water sector to explicitly assess and manage risks. In this paper, we introduce Layers of ...
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Supporting the Water Safety Plan (WSP) approach with the Failure Experience Improvement System (FEIS)
The Water Safety Plan (WSP) aims to ensure safe drinking water through risk assessment and preventive risk management which cover all steps of the water supply from catchment to the consumer. This approach requires a comprehensive hazard assessment including the identification and prioritisation of potential hazardous events. The Failure Experience Improvement System (FEIS) supports this key step ...
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Effects of rainwater harvesting on centralized urban water supply systems
The potential effect of widespread rainwater harvesting practices on mains water demand and quality management are investigated for three different types of urban areas characterized by different roof area to water demand ratios. Two rainfall patterns are considered with similar average annual depths but very different temporal distributions. Supply reliability and the extent of reliance on the ...
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A strategic approach for Water Safety Plans implementation in Portugal
Effective risk assessment and risk management approaches in public drinking water systems can benefit from a systematic process for hazards identification and effective management control based on the Water Safety Plan (WSP) concept. Good results from WSP development and implementation in a small number of Portuguese water utilities have shown that a more ambitious nationwide strategic approach ...
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Identification and assessment of water quality risks associated with sludge supernatant recycling in the presence of cyanobacteria
This study focussed on the fate of cyanobacteria cells and associated metabolites during the sludge management processes that follow the conventional drinking water treatment train. The topic is of importance, as the release of metabolites during sludge treatment may pose a risk to water quality if supernatant is recycled to the head of the plant. The study of the kinetics of cell damage and ...
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Transitioning sediment quality assessment into regulations: Challenges and solutions in implementing California's sediment quality objectives
Development and promulgation of sediment quality criteria represents a substantial challenge for water quality agencies. Unlike water quality programs that rely on individual chemical thresholds to assess water quality, the complex processes affecting contaminant bioavailability in sediments preclude the use of contaminant concentrations to independently assess impacts or identify cause. ...
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