Pathogens and groundwater
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چکیده
In the UK most waterborne disease-causing micro-organisms found in surface waters and groundwater are spread by the microbiological contamination of water by faeces or urine originating from humans or animals. The main threats are cholera, typhoid, paratyphoid, infectious hepatitis, leptospirosis, gastroenteritis, cryptosporidiosis and amoebic and bacillary dysentery. The ability of soils and underlying geological formations to retard or eliminate the onward transmission of the pathogenic organisms that are the agents of such infections is a vital asset and is one of the reasons for the longstanding preference both in Britain and elsewhere for groundwater for drinking water supply and other sensitive uses.
منابع مشابه
Water Evaluation for Microbial Pathogens of Station Treated and Groundwater Wells via Chromogenic Culture Media in Riyadh, Saudi Arabia
Evaluation of water quality for the presence of water borne pathogens has been considered a critical issue with a great concern especially in developing countries, this is a comparative study aims to assess the quality of water treated by the National Water Company and compare it with groundwater wells using chromogenicculture media as a specific, rapid, sensitive and reliable technique for the...
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This study examines the groundwater quality in wells situated near agricultural fields in Saudi Arabia. Fruits (e.g., tomato and green pepper) irrigated with groundwater were also assessed for the occurrence of opportunistic pathogens to determine if food safety was compromised by the groundwater. The amount of total nitrogen in most of the groundwater samples exceeded the 15 mg/L permissible l...
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This article discusses the value and limitations of using microbial indicators to predict occurrence of enteric pathogens in water. Raw or treated sewage is a primary source of fecal contamination of the receiving surface water or groundwater; hence, understanding the relationship between pathogens and indicators in sewage is an important step in understanding the correlation in receiving water...
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During floods, human exposure to pathogens through contaminated water leads to the outbreak of epidemic diseases. This research presents the first extensive assessment of surface and groundwater samples collected immediately after a flood (December 2015) and post-flood (April 2016) from the Adyar River of Chennai, a major city in India, for major ions, trace metals, bacterial population, and pa...
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متن کاملResearch 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) for to...
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