unaccounted for water Articles

  • Investigating unaccounted for water and its components in Zomba City water supply system, Malawi

    This study assessed Unaccounted for Water (UFW) in Zomba City, Malawi in 2009 and quantified its real and apparent loss components. The study was carried out in the period January–May 2009 and focussed on three selected water supply zones (Airwing, Malonje and Sadzi) especially for determination of the components of non-revenue water (NRW). Field measurements of flow and utility records formed ...


    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

  • A whole-of-the-catchment water accounting framework to facilitate public–private investments: an example from Australia

    Often, information on spatial water use efficiencies in a whole-of-the-catchment context does not exist or does not feed into the water policy process to guide investments. Significant gains in water use efficiency are achievable but the water savings are often assumed rather than identified systematically. This paper used a whole-of-the-catchment water accounting framework to identify the main ...


    By IWA Publishing

  • Case study - Maynilad Water Services - Manila, Philippines

    Service: Sahara - Leak Detection and Video Client: Maynilad Water Services, Inc. Project Date: Ongoing since 2010 Location: Manila, Philippines Type of Pipelines: Water Mains Diameter: 12-inch to 24-inch (300mm to 2200mm) Pipe Material: Cast Iron Ductile Iron Steel Length: 50 miles (80 km) Results: Over 157 leaks ...

  • Monitoring Water Resources Beyond Irrigation

    Over the past year, California’s governor has taken unprecedented action, requiring Californians to drastically cut potable urban water use. While the restrictions may seem harsh to some, it actually provides an opportunity for building managers and community association boards to implement an effective long-term water conservation program. And the result can be significant dollar savings. ...


    By WaterSignal

  • Making MGP Wastes Beneficial

    More than 11 billion gallons of coal tar were generated at MGP sites in the United States from 1816 to 1947. The types and quantities of waste discharged to surface waters from MGPs vary from site to site, and the disposition of several billion gallons is unknown and remains unaccounted for. Numerous locations in the United States have sediments and soils contaminated with wastes generated from ...


    By Minergy Corporation Limited

  • How to Save with Cooling Tower Credits

    Cooling towers dissipate heat from recirculating water used to cool chillers, air conditioners, or other process equipment to the ambient air. Heat is rejected to the environment from cooling towers through the process of evaporation. Therefore, by design, cooling towers use significant amounts of water. The thermal efficiency and longevity of the cooling tower and equipment depend on the proper ...


    By WaterSignal

  • Climate change policy should pass a `human rights test`

    Using the human rights framework to tackle challenging ethical questions can guide climate policy, argues political philosopher Simon Caney. The international community recognises climate change as one of the largest problems facing humanity. But while the impacts are often framed in purely economic terms, ...


    By SciDev.Net

  • Micro-plastics and the Specac Diamond Compression Cell

    The Environmental Audit Committee has called for a global ban on microbeads, minuscule plastic balls used by the cosmetic and cleaning industries for their abrasive properties (exfoliating face-wash, shower gel, toothpaste, etc). According to ...


    By Specac Limited

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