water network Articles

  • Moderator shares how upcoming conference will foster development of new technologies in fractured rock

    Ken Goldstein, CGWP, will moderate a session titled “High-Resolution Characterization in Fractured Rock” at the upcoming 2017 NGWA Conference on Fractured Rock and Groundwater, October 2-3 in Burlington, Vermont. Goldstein is senior vice president, water and environmental systems at Louis Berger. He recently ...

  • Optimising the water supply network

    Untitled Document The city of Crema sits on the Serio River south east of Milan in Northern Italy and has a population of approximately ...


    By Innovyze

  • Life Cycle Analysis of Water Networks

    Abstract Water authorities around the world are faced with the problem of ageing distribution networks and often only limited historical data on which to base a sound long term, cost efficient replacement policy. The LICAN approach to whole of life costing is introduced and a hypothetical case study is used to demonstrate the importance of such an approach. A selection of pipe networks ...


    By TRIC Tools Inc.

  • The Need for a Total View of Water Networks

    The water industry is not short of software offerings, and so the arguments in favour of yet another software program had better be very good indeed. In this article we examine how one very significant community of users – operations managers, engineers and planners - have largely had their specific needs overlooked; we identify the type of system needed to fulfil their requirements and the ...


    By Innovyze

  • Modbus network for hospital water treatment

    Six SmartScan50 were connected via a RS485 ModBus network in order to monitor the level in hospital water treatment tanks. The Challenges The customer needed to measure the level and determine when to fill or to empty each tank after or during the treatment. Light foam was present A communication network was required Before choosing SolidAT’s ...

  • Spatial network generation tool for water distribution network design and performance analysis

    The research presented in this paper aims at the support tool for generation of multiple networks with preset or randomised properties. To explore particular phenomena, water distribution analysis may require a coherent set of cases. Readily available in the literature are simple synthetic networks used for benchmarking, either real-life cases that are too diverse in size and configuration. The ...


    By IWA Publishing

  • Water distribution network simulation by optimization approaches

    When a fire-flow condition occurs and a nodal demand is excessive or when a pipe breaks, a water distribution system (WDS) may temporarily become deficient and unable to satisfy all nodal demands. Thus, estimation of the influences of failure conditions on the network is needed. A method for analyzing the hydraulic condition of the network in such a situation is proposed. The method, which is ...


    By IWA Publishing

  • Multi-objective optimisation of the operation of a water distribution network

    The aim of the present paper was to move water through a reservoir network in such a way as to meet consumer demands and level constraints, minimise the cost of electricity, and minimise the loss of chlorine. This was to be achieved by choosing the switching intervals of reservoir inlet pumps and valves, at the same time complying with the allowed minimum interval size of each device. Switching ...


    By IWA Publishing

  • Insertable Valve Network Provides OngoingSolution to Water Loss

    Orange Cove, CA - As the only city in Fresno County that is completely dependent on surface water, the City of Orange Cove had 40% unaccounted for water loss when Bill Little, former City Manager returned to Orange Cove to address the community’s growing water problems... “Our goal is to reduce unaccounted for water loss in Orange Cove down to 3% - 5%,” explained Little. “In a city with an old ...


    By ADS Environmental Services

  • The Effects of Intermittent Supply on Water Distribution Networks

    The world’s population is increasing at a tremendous rate, the world’s renewable water resources are reducing rapidly, the gap between supply and demand is widening with urbanisation and climate change making it even wider. This paper reviews how the Water Board of Lemesos, Cyprus, a water utility with a proven history of managing extremely well its distribution network, was forced ...


    By IWA Publishing

  • Modeling water supply networks in New Zealand

    Untitled Document Introduction ...


    By Innovyze

  • Division method for water distribution networks in hilly areas

    Water distribution systems in hilly areas are always divided into several zones due to the undulating terrain. The present approach of dividing water distribution systems lacks an assessment index and is characterized by a low degree of automation. With the building of a mathematical model, this paper introduces two indicators – pressure limitation and pressure variation – to enable the ...


    By IWA Publishing

  • WINNET (Water Innovation Network) - Case Study

    Project WINNET (Water Innovation Network) Client The Utrecht local authorities of De Bilt, Woerden, Zeist, Houten and the Higher Water Board 'De Stichtse Rijnlanden'. Country The Netherlands Background and objective Nowadays, local authorities have a duty of care with respect to urban ...


    By Eijkelkamp Soil & Water

  • New indices for reliability assessment of water distribution networks

    This paper presents new indices to evaluate the reliability of water distribution networks (WDNs) usable in the design, planning and management of these networks. Since the pressure-driven analysis (PDA) of WDNs produces more accurate results than the demand-driven analysis, the new indices are proposed based on the PDA. In the proposed measures, nodal pressures, nodal available discharges and ...


    By IWA Publishing

  • Analysis of flushing-path effects in water-distribution networks

    The unidirectional and conventional flushing methods are compared in this study and the water amount and flow velocity at junctions within an EPANET water distribution network are compared. In the unidirectional method, the necessary flow and water pressure for the minimum flow velocity for flushing become greater when pipe diameter exceeds a certain value. Therefore, the maximum length of ...


    By IWA Publishing

  • Assessment of metrics for resilient design of water distribution networks

    Water distribution networks (WDNs) play a crucial role in the well-being of human populations and economic prosperity. It is essential that they cope with abnormal operating conditions and recover functionality quickly. Traditionally, WDNs are designed using cost and reliability objectives, but there is a lack of consensus on the definition and quantification of reliability which typically is a ...


    By IWA Publishing

  • Adaptive water distribution networks with dynamically reconfigurable topology

    This paper presents a novel concept of adaptive water distribution networks with dynamically reconfigurable topology for optimal pressure control, leakage management and improved system resilience. The implementation of District Meter Areas (DMAs) has greatly assisted water utilities in reducing leakage. DMAs segregate water networks into small areas, the flow in and out of each area is ...


    By IWA Publishing

  • A new systematic technique for retrofit of water network

    This paper presents a new systematic technique for the retrofit of existing water network based on pinch analysis. This technique, which was applied on a paper mill, consists of three main steps: Network Diagnosis, Network Retrofit and Network Evolution. Network diagnosis step provides a good understanding of the existing water network through the use of a new tool called the Concentration Block ...


    By Inderscience Publishers

  • A comparison between different techniques for water network sectorization

    Water network partitioning represents one of the best methodologies for improving water balance and pressure control of a water distribution system in order to reduce water leakage. These techniques can be applied with greater effectiveness defining a smaller permanent network district, called a District Meter Area (DMA), achieved by the insertion of gate valves and flow meters. If the DMAs are ...


    By IWA Publishing

  • DCWW Network Maintenance

    Hydro-Logic has been commissioned by Dwr Cymru Welsh Water to install, operate and maintain a large network of telemetry enabled reservoir level and compensation flow gauges across the whole of Wales. The initial contract covered five years and following an EU OJEC re-tendering process, a new contract for six years was awarded in April 2006. Both contracts include the survey and rehabilitation of ...

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