These recommendations are based on over 38-years of field testing experience by our GTS Legionella Water Testing Company.Before going to get the sample, use a ballpoint pen to print on the sample bottle label; the source of the sample and the date the sample was taken.If sampling a domestic water system (water line, shower head, hot water heater, heat exchanger, sink, fountain, spa, humidifier, etc.
Keep the bottle closed until the moment it is to be filled. Legionella can cause Legionnaires’ Disease (pneumonia) or Pontiac Fever (flu like illness). For sites where Legionella monitoring is a requirement in hot and cold water systems, sampling should be carried out in accordance with: BS 7592 Sampling for Legionella Bacteria in Water Systems. 0000109669 00000 n 2œ=���~!��_ɯ�-yf_A_a_A_a_A_�Z)�J��Tz*���o�7����|c�!ߘi�4fڜɾ��ƾ��ƾ��ƾ��ƾ���}=�z�x�x�x�x�x�x�x�x���������lΏ]�m�O���-����#7�{��>��S9�˳�+�
The downside to this method is that it does not work well with water samples exposed to the environment because dirt and debris cause a high background that masks the presence of legionella in the water sample.
0000014923 00000 n SAMPLING POTABLE WATER AT THE POINTS OF USE Note: In most situations, it’s appropriate to sample only the hot water. 0000004529 00000 n startxref 0000042292 00000 n
Legionella are found naturally in the soil and water. Deliver samples to the Post Office in time to have it processed before the last daily dispatch of mail to Madison. 0000069017 00000 n 0000109311 00000 n The sodium thiosulfate is present in the collection bottle as a reducing agent. 0000120999 00000 n
%%EOF An outbreak of Legionella bacteria can occur when water in plumbing lines or mechanical equipment is not tested regularly or properly. When testing water sources for legionella, there are a variety of detection and sampling methods that can be used by a One detection method a legionella testing laboratory can perform is the culture method.
0000110458 00000 n The original “gold standard” method to quantitate legionella in both drinking water and environmental samples is the direct fluorescent antibody (DFA) method developed by CDC in 1978.
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0000008523 00000 n water samples is helpful.
The culture method takes ten days to complete, which is a loss of valuable time needed to prevent exposures and identify the source.
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Cooling Tower Water – It is recommended that cooling tower water samples be collected directly from the tower basin at the furthest most point away from the make-up-water.
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Desalination may also elevate cold water temperature. 0000010272 00000 n Depending on the complexity of the system, the actual number of samples will be worked out. 0000112982 00000 n 0000164123 00000 n 0000254045 00000 n
0000008428 00000 n 0000056866 00000 n 0000069083 00000 n Water samples and swab samples from faucets, shower heads and water outlets can be tested.The kit consists of: a styrofoam mailer, a sterile 150 ml bottle containing sodium thiosulfate, a sterile applicator (swab), an instruction sheet, Test Request Form, a ziplock bag, and two rubber bands. By filtering the water, many other risk factors can be removed prior to using the water in any manner. Samples should be in transit for no longer than 24 hours.
Implement Your WMP Today. 0000011147 00000 n endstream endobj 566 0 obj <>/Filter/FlateDecode/Index[40 431]/Length 38/Size 471/Type/XRef/W[1 1 1]>>stream <<2779B8A2F381D844B2226E18E38A4022>]/Prev 612390/XRefStm 2874>> Cold water could also be … 0000023694 00000 n 0000060347 00000 n 0000007451 00000 n 0000050665 00000 n 0000007890 00000 n
The periodic sampling and testing of water sources for the presence of Legionella bacteria is a valuable means of demonstrating to the regulator, clients, colleagues and other important stakeholders that adequate control over a water system is being maintained and that levels of Legionella bacteria are kept within safe limits. Expert legionella testing for landlords This type of water testing is not the same thing as monitoring the temperature of the water.
0000068681 00000 n Swab sampling involves collecting a surface sample with a sterile swab.
Legionella bacteria can be found throughout the world, mostly in aquatic and moist environments (e.g., lakes, rivers, ground water and soil). The DFA method has become more specific and sensitive by using monoclonal fluorescent antibody specific for several serogroups of L. pneumophila and several other legionella species that cause Legionnaires’ disease. Legionellawill not replicate at temperatures above 50°C and are rapidly killed at temperatures above 60oC.
For example, in hot climates, the cold water may be warm enough for rapid . 0000006082 00000 n 471 97
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