swimming pool test Articles

  • Microbiological water quality and sampling policy of public swimming pools

    Water samples collected from 100 public swimming pools in the West Bank of the Palestine by health inspectors. The samples were tested for microbiological quality for the years 2003, 2004 and 2005. The overall of unaccepted tested swimming pool water samples were as follows: 35.8% for total Coliforms (TC), 24.4% for faecal Coliforms (FC), 36% for Heterotrophic Plate Count (HPC), 39.3% Enterococci ...


    By Inderscience Publishers

  • Case study - How UV can reduce corrosion in swimming pool structure

    In 1985, twelve people were killed in Uster, Switzerland when the concrete roof of a swimming pool collapsed after only thirteen years of use.  The roof was supported by stainless steel rods in tension, which failed.  The Federal Materials Testing Institute, based in Duebendorf, Switzerland, and the Federal Materials Research and Testing Institute of Berlin concluded that the collapse ...


    By atg UV Technology

  • Hong Kong University of Science & Technology Outdoor Swimming Pool

    The Site: The outdoor swimming pooi has three sand filters, two carbon filters and one ozonator. The ozonator broke down regularly, whenever the temperature in the operating room was too high. The Ozonator was used because management wanted to reduce the chiorine dosage from 3ppm to lppm. Back washing frequency of the sand filters was weekly and the carbon in the carbon filters was replaced ...

  • LIT25 level indicating transmitter controls swimming pool level

    The Town of Okotoks, Alberta I never gave it much thought, but what happens to the displaced water when a hundred people jump into a large public swimming pool? It goes into a surge tank - of course. This Greyline LIT25 Level Indicating Transmitter with ultrasonic sensor is installed in the basement of the Okotoks Recreation Centre in Alberta, Canada. The LIT's 4-20mA output is connected to a ...


    By Greyline Instruments Inc.

  • Analysis of enterovirus and adenovirus presence in swimming pools in Cyprus from 2007–2008

    An analysis was carried out to determine the presence of enteroviruses and adenoviruses in public swimming pools in Cyprus. The effectiveness of the commonly implemented disinfection procedure of chlorination was confirmed by determination of bacteriological markers. Analysis of viral presence was carried out by sampling random swimming pools from the five major cities in Cyprus during a period ...


    By IWA Publishing

  • Importance of Air & Water Testing in Indoor Pools

    Have you ever wondered why your eyes hurt or why you have a cough after swimming at an indoor pool? We all assume that it’s from too much chlorine in the pool but that is false! If the pool staff doesn’t regularly test and monitor both the air and water indoors, the environment becomes very toxic and unsafe to everyone in the building. Water is an essential ingredient for all life as ...

  • A pilot-scale study of Cryptosporidium-sized microsphere removals from swimming pools via sand filtration

    Cryptosporidium species are the most common cause of gastrointestinal illness in treated recreational water venues. In order to protect public health during swimming, Cryptosporidium-sized microsphere removals by high-rate sand filtration with six coagulants were evaluated with a 5.5 m3 pilot-scale swimming pool. A sand filter without ...


    By IWA Publishing

  • Assessment of swimmer behaviors on pool water ingestion

    Enteric pathogens in pool water can be unintentionally ingested during swimming, increasing the likelihood of acute gastrointestinal illness (AGI). AGI cases in outbreaks are more likely to submerge heads than non-cases, but an association is unknown since outbreak data are self-reported and prone to bias. In the present study, head submersion frequency and duration were observed and analyzed ...


    By IWA Publishing

  • Florida SunSentinel.com mentions our pool check strips

    When Midwesterner Ken Christensen came to Florida, he moved into a house with a pool and was baffled. Christensen, author of the Romantic America series of travel books that focused on romantic places to stay, was a creative guy. Chemistry was never his forte. Blindly, he brought his water samples to the pool store, they told him what to do and he did it. But the Sept. 11 tragedy's impact ...

  • Profile of Ozone/Bromine Sanitation Systems for City of Tucson Municipal Pools

    Due to the inherent risks associated with the use of chlorine gas as a sanitizer for the City of Tucson’s twenty-six municipal swimming pool sites, I found myself in search of an alternative water sanitation method. The challenge was clear; find a system that would be safer to manage than gas chlorine, yet yield the same favorable sanitation and water quality results. Since all the sites ...

  • 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

  • Application of an optimized system for the well-defined exposure of human lung cells to trichloramine and indoor pool air

    In this study an in vitro exposure test to investigate toxicological effects of the volatile disinfection by-product trichloramine and of real indoor pool air was established. For this purpose a set-up to generate a well-defined, clean gas stream of trichloramine was combined with biotests. Human alveolar epithelial lung cells of the cell line A-549 were exposed in a CULTEX® device with ...


    By IWA Publishing

  • atg UV stand the test of time

    Client: Ainslie Park Leisure Centre   Location: Edinburgh, Scottland Description: Swimming Pool Disinfection atg UV Technology, market leaders in the design and manufacture of Ultraviolet technology systems prides itself on its level of workmanship and quality. Five years ago atg UV Technology, replaced the existing ozone system at ...


    By atg UV Technology

  • High range chlorine testing – what are the options?

    Higher range chlorine solutions are typically used for disinfecting products but standard chlorine meters often cannot measure to higher ranges. For example the Hach Pocket Colorimeter II for chlorine measures to a maximum of 2mg/L, and the ...


    By Camlab Limited

  • Ozone is Not Just for Residential Potable Water Treatment

    It has been over 170 years since the d iscovery of the ozone (O3) molecule. Since that time, scientists and engineers have been testing and evaluating ways to use ozone in many different processes, from water and air treatment to surface and food sanitation. The evolution was somewhat slow in the early days, taking nearly 50 years before Europeans found, in 1886, that ozone could be used for ...

  • Case study - Ainslie Park Leisure Centre

    5 years on: atg UV systems stand the test of time Ainslie Park Leisure Centre atg UV Technology, market leaders in the design and manufacture of Ultraviolet technology systems prides itself on its level of workmanship and quality. Five years ago atg UV Technology, replaced the existing ozone system at Ainslie Park Leisure Centre in Edinburgh with an atg UV ...


    By atg UV Technology

  • High groundwater site conditions

    Specific site conditions: BIOROCK non-electrical sewage treatment plants are unlike other wastewater treatment systems and are perfectly suitable for high groundwater conditions. BIOROCK plants can be installed in high water table or high groundwater sites by one of our trained installers. Our Research and Development team worked hard to find the best design to fit to difficult UK installation ...


    By BIOROCK S.à.r.l

  • UV technology - unique in water disinfection

    Due to its undisputable Success &  Efficiency in destroying Cryptosporidium and Combined Chlorine, The Centers for Disease Control and Prevention Recommend installing UV Systems It has taken many years of testing to convince the pool market that the most reliable and best available option for treating and disinfecting water is through using Ultraviolet (UV) technology. UV systems ...


    By ESCO International

  • Laboratory validation of an ozone device for recreational water treatment

    Obtaining an accurate assessment of a treatment system's antimicrobial efficacy in recreational water is difficult given the large scale and high flow rates of the water systems. A laboratory test system was designed to mimic the water conditions and potential microbial contaminants found in swimming pools. This system was utilized to evaluate the performance of an in situ ozone ...


    By IWA Publishing

  • Cryptosporidium – Understanding the hidden danger case study

    Understanding the problem Found in water supplies all over the globe, Cryptosporidium outbreaks are now becoming more and more frequent causing severe illness that can be fatal to vulnerable groups such as the young and elderly and in a number of cases has lead to costly and drawn out legal action. The problem is, whilst disinfection with chlorine effectively destroys other ...


    By atg UV Technology

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