water supply Articles
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Pharmaceuticals and water supply
Prescription Drugs have been detected in water supply systems of major cities in the United States including Europe, Canada, Australia and Asia. In addition, quantities of antibiotics, steroids, antidepressants, and hormones are also present in the water supply (Doro-on, 2011). These new emerging contaminants are designed with small concentrations that can generate specific health effects. It ...
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Performance indicators for water supply management
In the present study specific performance indicators are proposed that express the level of service of a water system subjected to varying operating conditions over time. The proposed methodology has been applied to a specific case study (Sinni water supply system in Basilicata – Italy) to demonstrate the real applicability of the proposed performance analysis that could be very useful ...
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Simulating development strategies for water supply systems
ABSTRACT The objective of this paper is to point out existing risks of current design and management strategies in water supply systems and to identify possible ways of designing and operating schemes which minimize these risks. This paper is motivated by the observation that existing design principles and engineering rules (best practice) seem to cope insufficiently or even conflict with ...
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Demand management in urban water supply
Since the 1930s, the drinking water supply of the Rabat-Casablanca coastal area has depended on water transfers from groundwater, from Maamora, and surface water, from the Bou Regreg Basin. Assessments carried out during the 1980s, based on patterns of water use at that time, showed that by 2010, transfers would have to be extended to include the surface water of Oued Sebu, if water requirements ...
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Risk management for water supply pipes
In this paper, the risk of water supply systems as a combination of hydraulic analyses (consequence) and failure probability of pipelines based on the actual condition is discussed. On the one hand, a stepwise closing of pipelines calculates the influence on customer's supply which represents the importance of a pipe. On the other hand, based on existing failure statistics, age and material ...
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Ancient water supply system of the old town of Lijiang, Yunnan Province, China
Lijiang City is located at 2,400 m altitude in the northwest of Yunnan Province, China. Lijiang's old town, with an area of 3.8 km2 and about 25,000 inhabitants, was inscribed on the UNESCO World Heritage List on 6 December 1997 noting in particular that it “possesses an ancient water supply system of great complexity and ingenuity that still functions effectively today.” In this paper, the water ...
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Urban Water Supply of Iskandar Region, Johor, Malaysia
Iskandar region is an economic region established by the Government of Malaysia. Being one of the fastest growing regions in the country, Iskandar Region has to cope with challenges in providing water supply to its population and industry. However, despite the sky-high demand of water, the water supply capability still needs lots of improvement. Demand will slowly outweigh the supply and by year ...
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Geodrilling: Managing Water Supply in Italy
In recent years there has been significant reorganisation in the Italian water sector to conform to the rules set out in the European Union Water Directive concerning the control of water pollution and the consistency of water tariffs. There have been some successes, particularly where companies in the industrial and commercial sectors, who manage their own water supplies, have had some ...
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Alternative Water Supply Systems
Alternative Water Supply Systems covers technical, social, financial and institutional aspects associated with decentralized alternative water supply systems. These include systems for greywater recycling, rainwater harvesting, recovery of water through condensation and sewer mining. A number of case studies from the UK, the USA, Australia and the developing world are presented to discuss ...
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Return of drinking water supply in Paris to public control
The ‘reclaiming’ by Paris of its water back into public hands is a paradox in the homeland of transnational water companies and at a time when the European Commission rather favours the liberalisation of public services ‘of general economic interest’. Yet what has happened is more complex. A quick historical review of management formulas in Europe reveals both the ...
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Project - Agra Water Supply Project
Supply and Construction of 800 mm diameter 12km pipeline from Karab to Mathura WTP, 1600 mm diameter 17.5 km pipeline from Yamuna River to WW-I WTP and 1600 mm diameter 1.5 km pipeline from Yamuna River to WW-II WTP Nature of Project: Bulk Water Transmission Location: Agra, Uttar Pradesh Value of Project: 124 Cr Client: UP Jal Nigam Status: Completed Our Area of Specialization:? ...
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Structural conditions in German water supply
Against the background of price controls for drinking water supply utilities in Germany, the comparability of utilities with regard to their specific structural conditions comes into focus. Relevant structural conditions were identified for the two main technical processes, namely water production (WP) and treatment, storage and distribution (TSD). A defined clustering process for comparable ...
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Classification of water supply systems based on energy efficiency
The Brazilian Labeling Program is a forceful instrument for the conservation of energy. In addition to allowing consumers to evaluate the best products from an energy point of view, it sets targets to make the products increasingly more efficient. In this context, buildings that can currently obtain the energy efficiency label are also included, demonstrating to customers the concern for ...
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Conducting surveys for water supply and sanitation in Indonesia
Surveys can vary in cost and complexity depending upon the sample size, number of questions and degree of accuracy. But sometimes, even after huge expenditures, the results can be misleading or just plain wrong. Simple surveys to determine willingness to pay or consumer preferences can be accomplished by the local government for minimal expense and still provide ...
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Sustainability of small water supplies: lessons from a Brazilian Program (SESP/FSESP)
This paper describes a highly successful community water supply program that was a part of a cooperative effort between Brazil's Ministry of Health and the Institute for Inter-American Affairs of the United States. The Serviço Especial de Saúde Pública (SESP) built hundreds of small water supplies across Brazil from 1942 to 1991 with an extremely low failure rate. When it was evaluated in 1960, ...
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Resilient water supply system for earthquake and tsunami
This paper focuses on a resilient water supply system for earthquake and tsunami. The 2011 off the Pacific coast of Tohoku earthquake generated not only strong ground vibration but also a tremendous tsunami. Although some of the water supply system suffered damage and water suspension occurred extensively, earthquake-resistant pipes survived and a quick recovery of water delivery was achieved. ...
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Rural water supply (Vol. 2 of 3) : Construction supervision manual
This rural water supply design manual is the first of three related volumes prepared for the use of prospective and actual owners, operators, managements, technical staff, consultants, government planners and contractors of small level three and level two water supply systems in the Philippines. Its purpose is to introduce the key concepts and considerations involved in the design of small ...
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Rural water supply (Vol. 3 of 3) : Operation and maintenance manual
This rural water supply design manual is the first of three related volumes prepared for the use of prospective and actual owners, operators, managements, technical staff, consultants, government planners and contractors of small level three and level two water supply systems in the Philippines. Its purpose is to introduce the key concepts and considerations involved in the design of small ...
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An approximate analytical method to size an air vessel in a water supply system
The size parameters of an air vessel, mainly including its initial gas volume and total volume, account for its performance in hydraulic transients. Traditionally, the size of an air vessel in a given water supply system is estimated by trial and error, usually aided by computers. To simplify the preliminary estimation of the air vessel's volume, in this paper, an approximate analytical ...
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Augmenting Water Supply Systems
Direct use of recycled water to augment urban water supply systems entails pumping water into the distribution system or blending with the conventional supply at the water treatment plant. The recycled water needs to be treated to drinking water standards or better, including advanced treatment processes to remove trace organics and chemicals. The City of Windhoek in ...
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