drinking water strategy Articles

  • Establishing Biofilm Control Strategies for Drinking Water Systems

    In last month’s AWWA Opflow magazine, several authors came together to publish an article entitled ‘Biofilm Control – Develop an Effective Strategy to Preserve Quality, Ensure Compliance’.  To access this article, visit AWWA’s website (http://www.awwa.org/publications/opflow.aspx).  The authors summarize ...


    By LuminUltra Technologies Ltd.

  • Evaluation of control strategies for drinking water treatment plants using a process model

    This research adds a method to evaluate control strategies to the design methodology for drinking water treatment plants. A process model dealing with parameters related to the calcium carbon dioxide equilibrium was set up. Using the process model, the existing control strategy was compared with a new control strategy and the effects of two different sets of input data were studied. It was ...


    By IWA Publishing

  • Manganese in Madison’s Drinking Water

    Public concern over events of manganese-discolored drinking water and the potential for adverse health effects from exposure to excess manganese reached a high level in 2005. In response, Public Health Madison Dane County, together with the Madison Water Utility, conceived and implemented a public health/water utility strategy to quantify the extent of the manganese problem, determine the ...

  • Drinking water: the problem of chlorinous odours

    Chlorinous off-flavours in drinking water are a leading cause of complaints to Australian water utilities and other utilities worldwide. The occurrence and causes of chlorinous odours in drinking water were investigated with the use of an odour panel, trained using a modified flavour profile analysis technique. A new system for classifying water types according to the causes of chlorinous odours ...


    By IWA Publishing

  • Homeland Security for Drinking Water Supplies

    As it has done with other jurisdictions, Congress has recently passed legislation aimed at protecting our nation's drinking water resources. Historically, water supply protection has been a high priority, including reservoir protection, continuous monitoring, and secure and redundant facilities to ensure an uninterrupted supply of drinking water. The Clean Water Act (1972), requires pollution ...


    By AECOM

  • Application of ozonation in drinking water disinfection based on an environmental management strategy approach using swot method

    Disinfection is the destruction of pathogenic microorganisms. It does not apply to nonpathogenic microorganisms or to pathogens that might be in the spore state (McCarthy and Smith, 1974). Chlorine is the most widely used disinfectant because it is effective at low concentration, is cheap and forms a residual if applied in sufficient dosage. It may be applied as a gas or as a hypochlorite, the ...


    By University of Tehran

  • Pb isotopes in drinking water: a new strategy for source detection of low Pb sources

    Source detection of low concentrations of Pb in water, for instance less than 15 μg L-1, may require a new methodology as the tolerances of Pb in drinking water are further reduced. It appears that the isotope properties of Pb may aid discrimination among natural sources and anthropogenic sources, including some plumbing materials. Characteristic Pb isotope signatures in a typical rural water ...


    By Taylor & Francis Group

  • Strategies of coagulant optimisation to improve the removal of turbidity and Ceratium hirundinella cells during conventional drinking water purification

    The dinoflagellate, Ceratium hirundinella (C. hirundinella) cells are known to cause many problems when source water due for purification contains relatively high concentrations. The objective of this study was to investigate strategies for the effective and simultaneous removal of turbidity and C. hirundinella cells using turbidity and total photosynthetic ...


    By IWA Publishing

  • US water strategy and the response to climate change

    A long-term, international investment in scientific study of the Earth’s climate is now resulting in a scientific consensus concerning climate change and its impacts on water resources. The 'National Water Program Strategy: Response to Climate Change' provides an overview of the potential effects of climate change on water resources and the US clean water and safe drinking water programs. It also ...

  • Biofilm control strategies in industrial processing waters

    Bacterial biofilms cause a number of serious problems for industrial fluid processing operations. Mechanical blockages, impedance of heat transfer processes and microbially induced corrosion result in billions of dollars of losses each year. In engineered systems, such as cooling water systems, food processing, and other industrial applications possible risk to public health and product spoilage ...


    By MIOX Corporation

  • Legislation: Future water - The govenment`s water strategy for England

    Visions, Strategies & Realisation Compared to other environmental areas such as land use, waste management, air quality and biodiversity, comprehensive strategic planning of water management in England has been dilatory. This is not to say that strategic planning has been entirely absent in water management, but that it has been undertaken in a piecemeal way, with numerous sectoral ...


  • Optimal strategy for algae control in potable water treatment facilities

    This paper presents both a current review of the state-of-the-art in algae removal, and an experimental study of algae removal in potable water supply. Established techniques were investigated by jar-testing on surface raw water samples derived from a lowland river, with the dominant species of algae being Scenedesmus sp (a green algae). These tests were conducted both in isolation and in ...


    By Inderscience Publishers

  • Current status, problems and control strategies of water resources pollution in China

    The surface water of 10 major river systems across China has been under intermediate pollution with striking eutrophication problems in major lakes (reservoirs). More data from the Ministry of Environmental Protection of China showed that underground water in 57% of monitoring sites across Chinese cities was polluted or extremely polluted. Rural water pollution, the rising number of ...


    By IWA Publishing

  • Securing safe drinking water supply under climate change conditions

    Water suppliers worldwide are challenged by climate variations, but so far only the qualitative change in boundary conditions has become clear but not yet the degree and impact on the water supply systems. Short-term quality changes in surface waters can, e.g. be caused by extreme rainfalls after dry periods. Longer heat periods without rain can induce middle-term quality changes in surface ...


    By IWA Publishing

  • A comparative assessment of institutional frameworks for managing drinking water quality

    The global burden of disease attributable to contaminated drinking water calls for effective strategies for ensuring drinking water quality. To characterize institutional and policy approaches towards water quality management, we compared national and sub-national institutional frameworks for drinking water provision and management in nine developing countries, focusing on roles, responsibilities ...


    By IWA Publishing

  • Enhancing climate adaptation capacity for drinking water treatment facilities

    Conventional water treatment processes (e.g., coagulation, flocculation, sedimentation, and filtration) are widely used for producing drinking water from surface water sources. Transient, gradual, or abrupt changes in source water quality that could compromise treatment effectiveness can be triggered by climate and related meteorological events, accidental or intentional contamination, ...


    By IWA Publishing

  • Linking discolouration modelling and biofilm behaviour within drinking water distribution systems

    High quality drinking water exits modern treatment works, yet water quality degradation such as discolouration continues to occur within drinking water distribution systems (DWDS). Discolouration is observed globally, suggesting a common process despite variations in source, treatment, disinfection and network configurations. The primary cause of discolouration has been identified as ...


    By IWA Publishing

  • Aggregation and biofilm formation of bacteria isolated from domestic drinking water

    The objective of this study was to investigate the autoaggregation, coaggregation and biofilm formation of four bacteria namely Sphingobium, Xenophilus, Methylobacterium and Rhodococcus isolated from drinking water. Auto and coaggregation studies were performed by both qualitative (DAPI staining) and semi-quantitative (visual coaggregation) ...


    By IWA Publishing

  • Prospective environmental and economic assessment for biotreatment of micropollutants in drinking water resources in Denmark

    A prospective environmental life cycle assessment (LCA) and financial cost assessment is performed to the application of bioaugmentation to sand filters in Danish waterworks, to remove 2,6-dichlorobenzamide (BAM) from drinking water resources. Based on pilot-scale and laboratory-scale data, we compare bioaugmentation to current alternative strategies, namely granular activated carbon (GAC) ...


    By IWA Publishing

  • Biodegradation of multiple nitrosamines by the Bacillus species LT1C in drinking water biofilters

    To better clarify the biodegradation mechanism of nitrosamines at low concentrations and characterize the nitrosamine-reducing strains isolated from biological activated carbon (BAC) filters in drinking water treatment plants. The nitrosamine-reducing bacterial culture Bacillus species LT1C was cultivated, isolated and purified from a pilot filter system using BAC, and was then applied to ...


    By IWA Publishing

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