Legionella Articles
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UV Light Treatment for Legionella Removal in Water and Wastewater
https://www.yasa.ltd/post/uv-light-treatment-for-legionella-removal Since in 1976, this dangerous bacterium leapt to the headlines for the dramatic epidemic episode in the Philadelphia hotel, the history of Legionella has been studded with irrefutable scientific discoveries, but also with many false beliefs. One of these concerns precisely the possibility of eliminating once and for all ...
By YASA ET
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Microbe Inotech Labs is now ELITE Certified
ELITE certification has been given to Microbe Inotech Labs. Microbe Inotech Labs is the first lab in Missouri to obtain Environmental Legionella Isolation Techniques Evaluation (ELITE) certification. Certificate of ELITE (Click on link to see our certificate) While this is our newest certification we are continually looking at opportunities that will provide “Excellence in ...
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Amoebae and
Legionella pneumophila in saline environmentsAmoeboid protists that harbor bacterial pathogens are of significant interest as potential reservoirs of disease-causing organisms in the environment, but little is known about them in marine and other saline environments. We enriched amoeba cultures from sediments from four sites in the New England estuarine system of Mt. Hope Bay, Massachusetts and from sediments from six sites in the Great ...
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Legionella pneumophila serogroup 3 prevalence in drinking water survey in Israel (2003–2007)A 5-year survey (2003 to 2007) was carried out on various drinking water sources in Israel for detection of Legionella spp. The most frequently isolated species was L. pneumophila serogroup 3 (prevalence 60.44±5.6) followed by L. pneumophila serogroup 1 (26.98±5.2) and other serogroups and unidentified species (12.6±9.8). L. pneumophila serogroup 1 is the worldwide prevalent serogroup in water ...
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Cooling Technology Institute - A new method to measure viable Legionella and total heterotrophic aerobic bacteria.
A new field method to measure viable Legionella and total heterotrophic aerobic bacteria was evaluated in the laboratory, in split-sample blinded comparisons and in actual operating field conditions. The method was proven reliable for determining viable cell concentrations of Legionella pneumophila serogroup 1, serogroups 2-14 and Legionella species. Total heterotrophic aerobic bacteria results ...
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CLAarhus University Hosptal fought aganist Legionella bacteria - and won Case Study
Legionella bacteria thrives in all hot-water supplies and Aarhus University Hospital, Risskov felt the problem firsthand. With the ECA generator from Danish Clean Water A/S they managed to significantly reduce the bacteria and thereby minimizing risks concerning ...
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NHS Portsmouth - Milton Park Practise
Location: GP Surgeries Service: Legionella risk assessment by microbiological testing. Project Description: A Legionella risk assessment survey is an examination of the potential risks presented by engineered water systems, and seeks to identify and prevent the risks of exposure to Legionella bacteria from work activities and water systems. Envirochem visited the surgeries before they ...
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Optimised Legionella protection for cooling towers - Enhanced safety in five steps
Poorly maintained cooling towers and evaporative condensers, coupled with old pipe systems or boilers,are one of the breeding grounds that can contribute to the spread of Legionella-containing aerosols. Plant operators can significantly reduce this risk in just five steps. The use of anti-bacterial packing materials of the type supplied by Enexio is a key cornerstone here. One problem that has ...
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Chemical disinfection of
Legionella in hot water systems biofilm: a pilot-scale 1 studyLegionella bacteria encounter optimum growing conditions in hot water systems and cooling towers. A pilot-scale 1 unit was built in order to study the biofilm disinfection. It consisted of two identical loops, one used as a control and the other as a ‘Test Loop’. A combination of a bio-detergent and a biocide (hydrogen peroxide + peracetic acid) was applied in the Test Loop three times under the ...
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Antibiotic susceptibility of Legionella strains isolated from public water sources in Macau and Guangzhou
The purpose of this study was to investigate the susceptibility of waterborne strains of Legionella to eight antimicrobials commonly used in legionellosis therapy. The minimum inhibitory concentrations (MICs) of 66 environmental Legionella strains, isolated from fountains and cooling towers of public facilities (hotels, schools, and shopping malls) in Macau and Guangzhou, were tested using ...
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A New Field Method for Enumerating Viable Legionella And Total Heterotrophic Aerobic Bacteria
Presentation at the 2007 Association of Water Technologies Convention and Exposition ABSTRACT A new field method for the quantitative determination of viable Legionella and total heterotrophic aerobic bacteria was evaluated in hundreds of laboratory experiments and from analysis of over two thousand field samplers in actual operating conditions. The method has been proven reliable for ...
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New York Building Owners Use Raphael™ To Stay In Compliance
If you own or operate a cooling tower in New York City, hopefully you are past the point of asking the question: What is legionella? You should already be aware that you had to have your Cooling Tower Maintenance Plan on-site as of March 1st, 2016. You may not be aware that, as of April 7th, 2016, New York City has adopted a new Chapter 8 to Title 24 of the Rules of the City of New York and it ...
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BCP™ 1015 - Legionella Control Program - Case Study
A Major Commercial complex with 5,500 RT HVAC system using BCP™ 1015 (Classic DTEA II™ ) for: Legionella Bacteria Control Program (BCP™ ) Biofilm Control Program (BCP™ ) Cleaner/Penetrant Aid/Dispersant Cooling System Before Application of BCP™ 1015 (Classic DTEA II™ ) Cooling System After Application of BCP 1015 (Classic DTEA II) Legionella Bacteria ...
By AMSA, Inc.
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UFK filters
The UFK filter module is an independently operating filter and can easily be used as a gatekeeper in a small-scale pipeline network, a pipe section or an individual tapping point. The filter is suitable for cold water installations with a maximum temperature of 40° Celsius. Since we are the manufacturer, we can produce every capacity. We have our own standard line with capacities between 0.3 ...
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Typing of
Legionella strains isolated from environmental samples in Crete, Greece, during the period 2004–2011In Greece, standard tests are performed in watering and cooling systems of hotels. A total of 1,494 water samples were collected during 2004–2011 from 124 hotels from four regions in Crete (Greece). Samples were tested for the presence of Legionella spp.; 103 isolates were identified and typed by polymerase chain reaction (PCR)-sequencing and sequence-based typing (SBT) (in case of L. ...
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Case Study: Sediment Filtration on Cold Water System Reduces Legionella Risk
After a Northeast university achieved non-detect Legionella levels in their building’s hot water system with a LiquiTech® Copper-Silver Ionization System, they faced a new obstacle when Legionella was detected in the cold water system due to water stagnation caused by the building’s mixed-use and fluctuating occupancy. Partnering with LiquiTech, the university implemented an ...
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Enumeration of Legionella pneumophila in cooling tower water systems
Legionella pneumophila, the causative agent of Legionnaires disease, is known to colonise and frequently grow in cooling tower waters. Disease is acquired by inhaling aerosol contaminated by legionellae. Determination of the count of Legionella pneumophila in cooling tower waters may, therefore, be useful for risk assessment. In our survey, 103 water samples from 50 cooling towers were examined ...
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Surveillance of
Legionella species in hospital water systems: the significance of detection method for environmental surveillance dataMonitoring of hospital water systems to prevent and control nosocomial legionellosis is important from a public health perspective. This study was conducted to survey the prevalence of Legionella contamination of hospital waters. A total of 44 water samples from the hot-water system of 11 hospitals were tested for Legionella by a culture method and a nested polymerase chain reaction (PCR) assay ...
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Occurrence of Legionella in showers at recreational facilities
Critical environments, including water systems in recreational settings, represent an important source of Legionella pneumophila infection in humans. In order to assess the potential risk for legionellosis, we analyzed Legionella contamination of water distribution systems in 36 recreational facilities equipped with swimming pools. One hundred and sixty water samples were analyzed from shower ...
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Legionellosis -- Why the Problem Continues
This year marks the 30 th anniversary of the 1976 American Legion convention of military veterans held in Philadelphia. A mysterious disease outbreak occurred that killed 34 people and debilitated nearly another 200. The media named it Legionnaires’ Disease. In early 1977, the cause of the outbreak had been proven to be a previously unknown waterborne pathogenic bacterium subsequently named ...
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