WATER HYGIENE AND SAFETY
sites have these continuous issues that are not being protected with the same level of vigour?
Another area that raised questions is
that the re-piping of the ward has now been completed, and was undertaken using copper crimped connections (mapress/pressfit type install). With this pipework using EPDM as a jointing material, but with EPDM flexible hoses having been non-compliant in healthcare facilities since 2010, is this a suitable installation type for healthcare properties, and what will be the long-term effects in a healthcare environment? Ultimately, this site had a plethora of
problems that all combined to create a scenario where Legionella could not be removed from the system. The cost to rectify these issues right was in excess of £300,000. The main question this paper seeks to ask is whether the challenges highlighted in this instance are unique, or are there similar challenges with water systems across the UK?
References 1 BS7592: 2008 Sampling for Legionella bacteria in water systems. BSI, 30 November 2008.
2 HSG274 Part 2 Legionnaires’ disease: Technical guidance Part 2: The control of legionella bacteria in hot and cold-water systems. Health & Safety Executive, 2014.
3 ISO11731:2017 Water quality – Enumeration of Legionella. International Organization for Standardisation, May 2017.
4 HTM 04-01: 2016. Part B: The control of Legionella, hygiene, “safe” hot water, cold water and drinking water systems, Operational management. The Department of Health, 2016.
5 Gaia V, Casati S, Tonolla M. Rapid identification of Legionella spp. by MALDI-TOF MS based protein mass fingerprinting. Syst Appl Microbiol n2011 Feb; 34 (1):40-4. doi: 10.1016/j. syapm.2010.11.007. Epub 2011 Jan 17.
6 WRAS Material Guidance: A guide for Manufacturers, Suppliers and Test Laboratories on the Application Requirements for WRAS Material Approval. WRAS, 28 April 2021.
7 Muder RR, Yu V L. Infection Due to Legionella Species Other Than L. pneumophila. Clinical Infectious Diseases 2002; 35 (8): 990-998.
8 Farhat M, Moletta-Denat M, Frère J, Onillon S, Trouilhé M-C, Robine E. (2012) Effects of Disinfection on Legionella spp., Eukarya, and Biofilms in a Hot Water System. Appl Environ Microbiol 2012: Oct; 78 (19): 6850–6858.
9 PD855468: 2015 Guide to the flushing and disinfection of services supplying water for domestic use within buildings and their curtilage. BSI, 30 September 2015. 10 Girolamini L, Salaris S, Pascale MR,
26 Health Estate Journal March 2022 Nick Barsby
Nick Barsby is the current Chair of the LCA, and the National Sales manager at T-safe UK. He has over 15 years’ experience in Legionella control. Having worked for some of the UK’s leading testing laboratories as a Business development manager, Sales manager, and Commercial manager, he has an extensive knowledge of analytical test methods and procedures. Playing a pivotal role in the introduction of MALDI- ToF confirmations in the UK market, he says he has ‘a proud track record of innovation and driving positive changes’ in every organisation he has worked with. Within the LCA he was a member of the Standards Review Committee, and has written and co- written numerous published articles on a range of subjects, including: n Factors to consider when reporting and interpreting a Positive Legionella Result.
n ESKAPE Pathogens – Antibiotic- resistant bacteria in healthcare settings.
n MALDI-ToF Confirmations. n Understanding UKAS Sample Matrix Types.
Mazzotta M, Cristino S. Dynamics of Legionella Community Interactions in Response to Temperature and Disinfection Treatment: 7 Years of Investigation. Microb Ecol 2021; 5 Jun 2021;
5.doi: 10.1007/s00248-021-01778- 9. Online ahead of print.
11 Fallon RJ, Stack BH. (1990) Legionnaires’ disease due to Legionella anisa. J Infect 1990; May: 20 (3):227-9. doi: 10.1016/0163-4453(90)91144-3.
12 Shimada S et al. Characterization of the First Cultured Psychotolerant Representative Legionella from Antarctica Reveals Its Unique Genome Structure. Microbiol Spectr 2021; Oct 31; 9 (2):e0042421. doi: 10.1128/ Spectrum.00424-21. Epub 2021 Oct 20.
13 Svarrer CW, & Uldum SA. (2012) The occurrence of Legionella species other
than Legionella pneumophila in clinical and environmental samples in Denmark identified by mip gene sequencing and matrix-assisted laser desorption ionization time-of-flight mass spectrometry. Microbiol Infect 2012: Oct; 18 (10):1004- 9. doi: 10.1111/j.1469-0691.2011.03698.x. Epub 2011 Nov 9.
14 ACoP L8: 2013 Legionnaires’ disease. The control of legionella bacteria in water systems. Approved Code of Practice and guidance on regulations. Health & Safety Executive, 2013.
Claire Jackson
Claire Jackson is an Authorising Engineer (Water) / senior Contracts manager at Lakeside Water, with 15 years’ experience as a Legionella risk assessor working on domestic, industrial, commercial, and healthcare systems. Her work has included risk assessing major hospital sites and all associated plant, as well as vehicle wash plant, recycled water, dust suppression plant, and rainwater harvesting systems. Experienced in PPM monitoring and on-site audits of domestic, processed, and recycled water systems, as well as cooling towers and closed systems, her water hygiene roles have included Legionella risk assessor, water hygiene technician, microbiology laboratory technician, environmental monitoring/water hygiene/ microbiology lab team leader, Contract manager, senior Contract manager, and Authorising Engineer (Water). A member of IHEEM since 2018, of the Royal Society of Public Health since 2019, and of the Water Management Society since 2010, her qualifications include: n City and Guilds Essentials for Authorising Engineers.
n City and Guilds Legionella Control and Management for Duty Holders and Responsible Persons – Hot and Cold Water Systems – Passed with Distinction.
n ILS Responsible Person Training.
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