Legionella Testing & Sampling
The UK’s Health and Safety Executives (HSE) Approved Code of Practice and Guidance (ACoP) "Legionnaires' disease: Control of Legionella bacteria in water systems" (L8) recommends that routine testing for Legionella bacteria in wet cooling systems be carried out at least quarterly, and more frequently when a system is being commissioned, or if the bacteria has been identified on a previous occasion.
Legionella Testing & Sampling:
Zeta Services offer a comprehensive range of fully accredited Legionella testing, sampling and microbiological laboratory analysis. Zeta Services carry out both Legionella and potable sampling at UKAS accredited laboratories which are also accredited under the PHLS Water Microbiology External Quality Assessment Scheme for the isolation of Legionella from water.
Zeta Services will help you formulate your Legionella sampling strategy prior to taking samples so that you may be able to see just how effective your control scheme actually is. It must be remembered that failure to detect Legionella should not be used as an excuse to relax control schemes. A Legionella negative result only means that Legionella bacteria were not detected in the sample of water taken at a specific time, and not that no Legionella were detected in your system. It is for this reason that results should only be interpreted by a suitably competent person.
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