water supply Articles

  • 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 ...


    By IWA Publishing

  • 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 to ...


    By IWA Publishing

  • 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. ...


    By IWA Publishing

  • 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, ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • Local self-governance, ethnic division in slums and preference for water supply institutions in Kolkata, India

    This paper investigates the preferences for institutional mechanisms for improved water supply services across different ethnic communities in slums of Kolkata. The Muslim community prefers privatization of water supply as against paid public supply. The backward caste community prefers both paid public delivery and privatization. Residents of non-notified (NN) slums prefer paid public ...


    By IWA Publishing

  • Renewal prioritization of multi-regional water supply pipelines through water supply risk assessment

    In the Republic of Korea, multi-regional water supply pipelines were intensively laid during the rapid economic growth period; however, these pipelines are now aging. The cost of renewal of the aged pipelines would be enormous. Therefore, limited resources need to be distributed effectively in accordance with the priority of renewal. In this study, the risks involved in the multi-regional ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • Rural water supply (Vol. 1 of 3) : Design 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 ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • Water supply structures of the Ottoman period in Istanbul (Asian side)

    The city of Istanbul has land on both the Asian and European continents. On the European side, many waterways (culverts) were constructed to supply water to the old city; however, on the Asian (Anatolian) side, such water supply structures were limited in number and capacity. Therefore in order to meet the water demand of this side of the city, foundation waterways were built. This study ...


    By IWA Publishing

  • Costing Improved Water Supply Systems for Low-income Communities - Water Supply Costing Processor Tool

    It was prepared in response to a need to find a robust method of cost analysis for improved access, both to safe drinking water and to adequate sanitation. The manual and software provide criteria and procedures that ensure the achievement of maximum community health benefits at the minimum cost of investing in improved water supply and sanitation technologies. To facilitate the application of ...


    By IWA Publishing

  • 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 ...


    By Geoquip Water Solutions

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