water leakage Articles

  • What classifies as water pollution and why is it an issue?

    The UN declared 2005-2015 as the International Decade for Action ‘Water for Life’. Yet each day thousands of people still die as a result of contaminated water. This does not even take into account the millions of organisms that perish every year thank to polluted water sources. Water pollution is a huge issue that is made more so by the fact that unfortunately, water is ...


    By Aquaread Limited

  • Case study - Hetch Hetchy Water and Power Project (SFPUC)

    Service: Magnetic Flux Leakage (MFL) Client: San Francisco Public Utilities Commission (SFPUC) Project Date: 2007 to 2010 Location: California, USA Type of Pipeline: Water Transmission Main Diameter: 56-inch to 72-inch Pipe Material: Steel San Francisco Public Utilities Commission (SFPUC) operates three parallel cement mortar-lined steel pipelines 47.5 miles long, ...

  • Influence of cavitation phenomenon on the hydraulic behavior of leaks in water distribution systems

    This paper examines the hydraulic behavior of leakage from water distribution systems under condition of cavitation. For this purpose, an experimental model featuring small (i.e., a fraction of a millimeter) orifice openings was designed and built to simulate idealized cracks in defective pipes. During the tests, water was allowed to flow through the cracks at controlled pressures during ...


    By IWA Publishing

  • Water distribution system model calibration under uncertainty environments

    The calibration process of water distribution system models allows for accurate and reliable hydraulic analysis results. Thus, calibration is of utmost importance if adequate operation and maintenance model-based procedures are sought. However, in emerging economies, there is a series of factors that make it more difficult to construct accurate models, including very poor information management, ...


    By IWA Publishing

  • Application of genetic programming to modeling pipe failures in water distribution systems

    The water loss from a water distribution system is a serious problem for many cities, which incurs enormous economic and social loss. However, the economic and human resource costs to exactly locate the leakage are extraordinarily high. Thus, reliable and robust pipe failure models are demanded to assess a pipe's propensity to fail. Beijing City was selected as the case study area and the pipe ...


    By IWA Publishing

  • Assessment of real losses in potable water distribution systems: some recent developments

    ABSTRACTConsiderable progress has been made over the past 10 years in the assessment and benchmarking of real losses in potable water distribution systems. Most of the advances have been based on the burst and background estimate (BABE) methodology, which was first developed in the mid-1990s by the UK water industry and has since been widely accepted and used in many parts of the world. Since ...


    By IWA Publishing

  • The Low Down on Pipes: A Look at Municipal Water

    We manufacture our portable remotely operated vehicles (ROVs) and pipe crawlers for a variety of different industries and applications. Due to their robust design and versatility, Deep Trekker products have proven to be the ideal tools for many professionals and ...


    By Deep Trekker Inc.

  • MFE slipline of water supply case study

    HOBAS Under Live Runway When the main water supply line at the McAllen, Texas, airport was rehabilitated using HOBAS pipe, it brought new meaning to the phrase “slipline live.” McAllen-Miller International Airport (MFE) is the primary business airport of deep South Texas and Northeast Mexico. To accommodate the future needs of the greater Rio Grande Valley, a master ...


    By Hobas Pipe USA

  • Current Trends in Modelling Water Distribution Systems

    Untitled Document Hydraulic Modelling is emerging from the infrastructure planning offices of our water utilities, where it continues to play a vital role in optimising capital investment projects, to take a ...


    By Innovyze

  • ELECTRONIC WATER TREATMENT REDUCES FOULING AND CORROSION IN PIPELINES

    Increasing pressure loss in the pipeline is often caused by scale corrosion or product fouling of the internal surfaces. This condition slows transmission and distribution capacity, and can require more than just routine maintenance if it remains unaddressed. Interior corrosion, fouling and leakage in pipeline systems will adversely impact bottom-line operations. ...

  • Modeling water supply networks in New Zealand

    Untitled Document Introduction ...


    By Innovyze

  • A new algorithm for real-time pressure control in water distribution networks

    This paper presents a new logic algorithm for real-time control of regulation valves in water distribution networks. This method entails identifying in real time the appropriate closure setting of regulation valves in order to reach and keep the desired piezometric height at the control node(s), by making use of measurements concerning both the piezometric height at the control node(s) and the ...


    By IWA Publishing

  • A new approach to improve water loss control using smart metering data

    The control of water losses is a major concern in the sustainability of urban water utilities and in promoting the efficient use of this natural resource. Recent advances in telemetry technology provide high-resolution consumption data at the consumer level, allowing for a remarkable knowledge improvement on the different water balance components. However, few studies focus on systematic ...


    By IWA Publishing

  • A long-term plan for water pipeline rehabilitation considering preventive maintenance

    Water pipelines deliver water of daily-life demand to customers. However, pipelines tend to be damaged after years of use. Thus, many waterworks are now faced with the major task of water pipeline rehabilitation. However, budgets for pipeline replacement are limited. The present study aims to propose a long-term plan for water pipeline rehabilitation under limited rehabilitation budgets that ...


    By IWA Publishing

  • Thermally induced strains and stresses in cast iron water distribution pipes: an experimental investigation

    Full-scale tests have been carried out on lengths of unrestrained and restrained plain and jointed distribution pipe sections (∼4″ or ∼100 mm internal diameter) in order to investigate the strains and loads generated in cast iron water distribution mains as a result of temperature fluctuations. Tests on unrestrained sections enabled the coefficient of thermal expansion of the pipe material to be ...


    By IWA Publishing

  • Online simplification of water distribution network models for optimal scheduling

    This paper presents an implementation of an extended simplification algorithm of water distribution network models for the purpose of inclusion in the online optimisation strategy for energy and leakage management in water distribution systems. Whereas the previously proposed reduced model represented accurately the original hydraulic water network characteristics, the energy distribution in the ...


    By IWA Publishing

  • Algorithmic network monitoring for a modern water utility: a case study in Jerusalem

    We report on the design, deployment, and use of TaKaDu, a real-time algorithmic Water Infrastructure Monitoring solution, with a strong focus on water loss reduction and control. TaKaDu is provided as a commercial service to several customers worldwide. It has been in use at HaGihon, the Jerusalem utility, since mid 2009. Water utilities collect considerable real-time data from their networks, ...


    By IWA Publishing

  • The bacteriological quality of drinking water in Haldwani Block of Nainital District, Uttarakhand, India

    A cross-sectional study was conducted to assess the bacteriological quality of water in Haldwani block, Nainital District, India. Stratified random sampling was used to categorize water sources and consumer points. In total, 108 samples were collected: 15 from the Gola river, 51 from water taps, 24 from water treatment plants and 18 from tube wells. Samples were tested for coliforms by the most ...


    By IWA Publishing

  • Why Water Management Professionals Can’t Afford to Ignore Innovation

    Innovation in the water management industry is born from the collaboration between water managers, operators, engineers and manufacturers who set out to resolve problems or improve service levels that impact all parts of the supply chain. This is usually the result of early adopters either at the field level or in engineering ...


    By Singer Valve Inc.

  • Hydrological investigations and water resources management for wildlife sanctuary in central India

    The important hydrological issues in Nauradehi Wildlife Sanctuary (NWLS) are development of water resources, development of flora and fauna, trouble–free water availability for wildlife and retention of soil moisture for maximum forest growth. In the present study, the surface and groundwater resources of the sanctuary were estimated using water balance method. The results show that the sanctuary ...


    By Inderscience Publishers

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