cryptosporidium monitoring Articles

  • The Cryptosporidium Water Crisis

    One major event to strike the water industry recently, was the Lancashire Cryptosporidium water crisis. Cryptosporidium is a parasite found in livestock, which can have some severe consequences on the gastrointestinal system when ingested. Lancashire has seen 300,000 households suffer from a water contamination incident that’s forced residents to buy bottled water for ...


    By Partech (Electronics) Ltd.

  • Evaluation of Inactivation of Cryptosporidium parvum Oocysts in Recreational

    Purpose: To determine the ability of the Hanovia UVP 61 water disinfection system to nactivate Cryptosporidium parvum oocysts suspended in recreational (water park) water.Methods and materials:Test water: The water used for this test was from the Adventure Island water park, Tampa, Florida. A 200 gallon (750 L) volume had been  collected on October 24, 1999, and delivered to Clancy ...

  • A Cryptosporidium hominis outbreak in North-West Wales associated with low oocyst counts in treated drinking water

    An outbreak in the autumn of 2005 resulted in 218 confirmed cases of Cryptosporidium hominis. The attack rate (relative risk 4.1, 95%CI 2.8–9.1) was significantly higher in the population supplied by Cwellyn Water Treatment Works (WTW). A case–control study demonstrated a statistically significant association (odds ratio 6.1, 95% CI 1.8–23.8) between drinking unboiled tap water and C. hominis ...


    By IWA Publishing

  • Development and test for long-term stability of a synthetic standard for a quantitative Cryptosporidium parvum LightCycler™ PCR assay

    ABSTRACTA recently described quantitative rapid cycle real time PCR (LightCycler™) assay detects Cryptosporidium parvum after in vitro excystation, which is a surrogate marker for the viability of the organisms. In the original assay the quantification standard is a dilution series of C. parvum oocysts with a microscopically determined excystation rate. The need to keep suspensions of viable ...


    By IWA Publishing

  • Detection of Giardia and Cryptosporidium cysts/oocysts in watersheds and drinking water sources in Brazil urban areas

    The protozoan parasites Giardia and Cryptosporidium have been described as important waterborne disease pathogens, and are associated with severe gastrointestinal illnesses. The objective of this paper was to investigate the presence of Giardia cysts and Cryptosporidium oocysts in samples from watershed catchments and treated water sources. A total of 25 water samples were collected and examined ...


    By IWA Publishing

  • Disposable swim diaper retention of Cryptosporidium-sized particles on human subjects in a recreational water setting

    Cryptosporidium is a chlorine-resistant protozoan parasite responsible for the majority of waterborne disease outbreaks in recreational water venues in the USA. Swim diapers are commonly used by diaper-aged children participating in aquatic activities. This research was intended to evaluate disposable swim diapers for retaining 5-μm diameter polystyrene microspheres, which were used as ...


    By IWA Publishing

  • Comparison of three methods to concentrate Giardia cysts and Cryptosporidium oocysts from surface and drinking waters

    In this study, three methods commercialized by Pall (Envirochek HV), Idexx (FiltaMax) and Whatman (Cryptest) to concentrate Giardia cysts and Cryptosporidium oocysts from surface and drinking waters were compared according to the EPA standard protocol. Twenty litres of surface and 100 litres of drinking waters were inoculated with 103 (oo)cysts before being concentrated by ...


    By IWA Publishing

  • Monitoring and evaluation of removal of pathogens at municipal wastewater treatment plants

    The concentrations and removal of Cryptosporidium, Giardia, and microbial indicators, including somatic coliphages and fecal coliforms were investigated through the wastewater treatment processes at three municipal wastewater treatment plants in Beijing, China. The experimental results showed that the concentrations of Cryptosporidium in untreated wastewater, ...


    By IWA Publishing

  • Assessing protozoan risks for surface drinking water supplies in Nova Scotia, Canada

    Protozoa, such as Cryptosporidium parvum and Giardia lamblia, pose a human health risk when present in drinking water. To minimize health risks, the Nova Scotia Treatment Standards for surface water and groundwater under the direct influence of surface water require a 3-log reduction for Giardia cysts and Cryptosporidium oocysts. This study ...


    By IWA Publishing

  • Case study - Anglian water Cryptosoridium outbreak

    Pitsford Drinking Water Site, England In June 2008, a rabbit was located in the wash water tank at the Pitsford Drinking Water Plant of Anglian Water, leading to contamination of the treatment works with Cryptosporidum, a chlorine resistant parasitic micro-organism. The parasite was detected on June 24 and, following consultation with health and local authorities, a notice to boil ...


    By atg UV Technology

  • On tap: recreational waterborne disease at an all-time high

    Levels of recreational waterborne disease are at their highest since reporting began in 1978, suggesting the need for interventions aimed at reducing risks in natural and treated water systems. More outbreaks are reported related to recreational  waterborne diesease than drinking water sources. Every two years the Centers for Disease Control and Prevention (CDC) publishes a report on waterborne ...

  • Reference pathogen numbers in urban stormwater for drinking water risk assessment

    Targeted stormwater event-based monitoring of adenovirus, Cryptosporidium and Campylobacter, the human health reference pathogens of viruses, protozoa and bacteria, respectively, was undertaken to determine numbers prior to water recycling via an aquifer. This allowed the determination of a 95th percentile of reference pathogen numbers in stormwater (2 n/L for adenoviruses, ...


    By IWA Publishing

  • Pathogenic parasites and enteroviruses in wastewater: support for a regulation on water reuse

    Brazilian regulations for nonpotable reuse are being established using World Health Organization guidelines, however, they should be developed based on local monitoring studies. This study intended to analyze enteroviruses, protozoa and viable Ascaris sp. eggs in raw (24) and treated (24) effluents from four Wastewater Treatment Plants of São Paulo State, Brazil. The protozoa were ...


    By IWA Publishing

  • Water Treatment Plant (Wtp) Optimization Techniques

    Introduction Given the seemingly ubiquitous, yet episodic nature of pathogen presence in source waters, monitoring and opti-mizmg the performance of water treatment plants is an increasingly important aspect in many suppliers' plans for maintaining w;ater quality . Filtration Plant Optimization (FPO) The Filtration Plant Optimization (FPO) analysis w:as ...


    By Analytical Services, Inc

  • Turbidity Measurements in Drinking Water, Effluent Discharges and Coagulant Controlling

    This month at Partech Water Instruments we’re talking about our turbidity sensors—fantastic to use as an environmental indicator. So how can they be used? We’re here to tell you about turbidity sensors being utilised for drinking water, effluent discharges and coagulant controlling. Turbidity Sensors and Drinking Water Turbidity sensors ...


    By Partech (Electronics) Ltd.

  • Quantifying micro-organism removal for safe drinking water supplies

    Over the past ten years the management of microbiological drinking water quality in The Netherlands has shifted from curative administration toward a more preventative strategy. This shift in policy came as a result of the findings of reports from other developed countries which highlighted the risk from persistent pathogens such as Cryptosporidium, Giardia, some enteroviruses; and the pathogenic ...


    By IWA Publishing

  • Estimation of pathogen concentrations in a drinking water source using hydrodynamic modelling and microbial source tracking

    The faecal contamination of drinking water sources can lead to waterborne disease outbreaks. To estimate a potential risk for waterborne infections caused by faecal contamination of drinking water sources, knowledge of the pathogen concentrations in raw water is required. We suggest a novel approach to estimate pathogen concentrations in a drinking water source by using microbial source ...


    By IWA Publishing

  • US EPA UVGDM 2006 validated UV systems

    As micro-organisms evolve, so too does their resistance against traditional methods of treatment. atg UV has developed a range of validated systems that fully comply with the requirements of the US EPA 2006 UVDGM (worlds' strictest validation standard).  atg UV Technology has a range of UV systems that have been designed specifically for the drinking water industry, and are fully compliant ...


    By atg UV Technology

  • Rand water

    Client: Rand Water, South Africa   Location: Zuurbekom, Gauteng, South Africa Description: Potable Drinking Water atg UV Technology, pioneers in the design and engineering of Ultraviolet treatment systems have supplied Rand Water, South Africa's largest supplier of potable water to the Gauteng area with a state-of-the-art compact, ...


    By atg UV Technology

  • Anglian water choose atg UV for effluent treatment

    Client: Anglian Water   Location: Great Billing, Special Operations Site Description: Effluent Waste Water atg UV Technology, pioneers in the design and engineering of Ultraviolet treatment systems have won supplied Anglian Water with two compact, closed chamber, Ultraviolet disinfection systems for the treatment of effluent waste ...


    By atg UV Technology

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