Drinking Water Monitoring Articles

  • The risk of cancer as a result of elevated levels of nitrate in drinking water and vegetables in Central India

    The objective of the present study was to determine the effect of nitrates on the incidence of gastrointestinal (GI) cancer development. Nitrate converted to nitrite under reducing conditions of gut results in the formation of N-nitrosamines which are linked to an increased gastric cancer risk. A population of 234 individuals with 78 cases of GI cancer and 156 controls residing at urban and ...


    By IWA Publishing

  • New electrochemical sensor for sensitive quantification of copper in river, city, bottled and drinking water samples

    In the present study, a reliable and very sensitive sensor for the determination of ultra-trace of Cu(II) is proposed. Copper was determined by anodic differential pulse stripping voltammetry based on the adsorption collection of the Cu(II) on an encapsulated Schiff base onto multiwalled carbon nanotube paste working electrode. The variation of peak current with pH and several instrumental ...


    By IWA Publishing

  • Legionella, water treatment and energy saving

    We can help improve health and safety and increase energy reduction. At the moment you probably keep water temperatures above 60°C and you probably undertake regular chemical or thermal water system treatments and shower head treatments, all to prevent the growth of Legionella in your water system. There are several reasons to do this including legal, safety, ...


    By Aquadron

  • Broader incubation temperature tolerances for microbial drinking water testing with enzyme substrate tests

    Microbiological testing is an integral part of measures to ensure safe drinking water. However, testing can be restricted in low-resource settings by the requirement for specialized laboratory facilities and testing procedures. Precisely controlled incubation temperature is one example. The effect of varied incubation temperatures on the performance of two enzyme substrate tests for the ...


    By IWA Publishing

  • Chlorine mystery solved

    Following the installation of in-pipe drinking water quality monitoring sondes, distribution engineers discovered an occasional significant disparity between the Intellisondes’ data and results from grab samples tested by a photometer tablet (DPD) method. For most of the time, there was close agreement between the two methods, but periodically, the photometer results varied wildly, whilst ...


    By Intellitect Water Ltd

  • Research considerations for more effective groundwater monitoring

    Since numerous pathogens occur in feces, water is monitored for fecal contamination using indicator organisms rather than individual pathogens. Although this approach is supported by health effects data in recreational waters, it is questionable when used for drinking water. Most outbreaks in groundwater occur in systems that have not violated the US EPA's maximum contaminant limit (MCL) ...


    By IWA Publishing

  • Removal of arsenic from anthropogenic aqueous media: an analytical review with particular reference to solvent extraction technique

    Arsenic is an environmental toxicant, which is known to cause serious ailments to humans and its presence in drinking water poses grave threat to millions of people all over the world. Apart from being drinking water pollutant, arsenic poses another dimension of problem in the recovery of metals from some of the sulfide ores, namely copper pyrites and galena. These were the two main reasons to ...


    By Inderscience Publishers

  • Does calcium in drinking water modify the association between nitrate in drinking water and risk of death from colon cancer?

    The objective of this study was to explore whether calcium (Ca) levels in drinking water modified the effects of nitrate on colon cancer risk. A matched case–control study was used to investigate the relationship between the risk of death from colon cancer and exposure to nitrate in drinking water in Taiwan. All colon cancer deaths of Taiwan residents from 2003 through 2007 were obtained from the ...


    By IWA Publishing

  • Liquid application

    The CLD 88 enables to detect down to pMol level (nitrite / nitrate levels in drinking water).The new sample tube we are using (type 1), is optimized for this application. The internal flow restriction ismade from stainless steel and it can be cleaned in an ultrasonic cleaner. The sample flow of 110 ml/minminimizes the effect of the helium bubbles in the liquid sampler, which results in very low ...


    By Eco Physics Inc.

  • Chemical denitrification of nitra te from groundwater via sulfamic acid and zinc metal

    Nitrate (NO3 -) concentrations in groundwater have increased globally (Kapoor and Viraraghavan 1997). Wastewater, fertilizers, and livestock farming are major sources of nitrate in groundwater supplies. Groundwater in many locations is used as a supply for drinking water, and high nitrate concentrations present a potential risk to public health, particular to infants (Gangolli et al., 1994). In ...


    By University of Tehran

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