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How to address positive Legionella test results

Matt Morse and Nick Barsby of the Legionella Control Association (LCA) take a detailed look at some of the key steps to take, and the pitfalls to avoid, in the event of positive Legionella test results.

The LCA requires its members to have in place management procedures, and appropriately competent staff, that give them the capability of responding appropriately to positive Legionella results. Positive Legionella results following sampling are one area where it’s possible to misinterpret the meaning and end up with what could at best be inappropriate expense, and, at worst, a dangerous situation and risk to life. 

Sample planning

Interpretation of results starts with a suitable sample plan. If inappropriate samples are taken, results will be difficult to interpret meaningfully. Samples can be taken pre- or post-flush, and with or without disinfection of the outlet. The selection of location, type of sample, and method of analysis chosen, form part of the sample plan.

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Upcoming Events

The Fire Safety Event 2024

National Exhibition Centre (NEC), Birmingham
30th April - 2 May 2024

Wales regional conference, exhibition and awards dinner 2024

International Conference Centre (ICC) Newport
28th - 29th May 2024

NAHFO National Conference 2024

Crowne Plaza Newcastle Upon Tyne
3rd - 5th June 2024

Design in Mental Health 2024

Manchester Central
4th - 5th June 2024

InstallerSHOW 2024

National Exhibition Centre (NEC), Birmingham
25th - 27th June

Healthcare Estates 2024

Manchester Central
8th-9th October 2024

Access the latest issue of Health Estate Journal on your mobile device together with an archive of back issues.

Download the FREE Health Estate Journal app from your device's App store

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