{"id":5610,"date":"2017-07-19T07:06:18","date_gmt":"2017-07-19T07:06:18","guid":{"rendered":"http:\/\/nchasia.com\/vn-vn\/?p=5610"},"modified":"2025-07-02T11:45:21","modified_gmt":"2025-07-02T03:45:21","slug":"legionella-prevention-plan","status":"publish","type":"post","link":"https:\/\/www.nchasia.com\/vn-vn\/legionella-prevention-plan\/","title":{"rendered":"Legionella prevention plan"},"content":{"rendered":"<p><strong>How can I prevent legionella?<\/strong><\/p>\n<h2><strong>WHY DO I NEED A LEGIONELLA PREVENTION PLAN?<\/strong><\/h2>\n<p>The most common reasons for outbreaks of Legionella include poor, or a lack of, preventative measures put in place by those responsible for\u00a0<a title=\"Water treatment\" href=\"https:\/\/www.nchasia.com\/en-au\/solutions\/water-treatment\">maintaining water systems<\/a>. Stakeholders in charge of property maintenance have a legal obligation to comply with legislations &#8211; failure to take preventive measures is not only unlawful but can have fatal consequences.<\/p>\n<h2><strong>WHAT IS LEGIONELLA?<\/strong><\/h2>\n<p>The bacterium, Legionella pneumophila, is the root cause of legionellosis; the worst form of legionellosis being Legionnaires\u2019 disease. It is considered to be a biological hazard as it is a form of pneumonia. People infected with the disease can suffer from devastating illness and in some instances, death occurs.<\/p>\n<h2><strong>WHERE CAN LEGIONELLA GROW?<\/strong><\/h2>\n<p>Legionella can grow anywhere where stagnant or warm water exists. However, purpose-built HVAC (heating, ventilation and air conditioning) systems are particularly at risk of causing the disease as they provide the ideal environment for the bacteria to multiply. HVAC systems include:<\/p>\n<ul>\n<li>Cooling towers<\/li>\n<li>Reservoirs<\/li>\n<li>Hot and cold water systems<\/li>\n<li>Spa pools<\/li>\n<li>Humidifiers<\/li>\n<li>Air washers<\/li>\n<li>Showers<\/li>\n<\/ul>\n<h2><strong>ENVIRONMENTS AT RISK OF DANGEROUS LEGIONELLA LEVELS<\/strong><\/h2>\n<p>Large and small sites alike are at risk of Legionella. Establishments particularly vulnerable to the disease include:<\/p>\n<ul>\n<li>Homes<\/li>\n<li>Hospitals<\/li>\n<li>Schools<\/li>\n<li>Care facilities<\/li>\n<li>Restaurants<\/li>\n<li>Hotels<\/li>\n<li>Leisure centres \/ public pools<\/li>\n<\/ul>\n<h2><strong>HOW CAN I PREVENT LEGIONELLA?<\/strong><\/h2>\n<p>1)\u00a0<strong>Complete a risk assessment<\/strong>\u00a0&#8211; the first step in the prevention of legionella is to perform a risk assessment. When a risk assessment is performed, it is vital that the following is considered:<\/p>\n<ul>\n<li>Temperature &#8211; bacteria multiply at temperatures of 20-45\u00baC. The bacteria lay dormant and do not multiply at temperatures below 20\u00baC and cannot survive temperatures above 60\u00baC.<\/li>\n<li>Nutrients &#8211; impurities such as limescale, algae, sludge or rust act as food for bacteria. Bacteria thrive in warm conditions where nutrients are available.<\/li>\n<li>Water storage \u2013 Legionella bacteria can multiply when water is stored or if it is re-circulated.<\/li>\n<li>Water use in general \u2013 the potential threat of Legionella bacteria should be considered if water is likely to be consumed or dispersed (for example, the water used for showers or aerosols).<\/li>\n<\/ul>\n<p>2)\u00a0<strong>Legionella control<\/strong>\u00a0\u2013 taking measures to prevent the hazards identified in the risk assessment is the next crucial step to prevent Legionella. Control measures include:<\/p>\n<ul>\n<li>Ensuring the correct temperatures \u2013 ideally at 60\u00baC or higher to kill the growth of bacteria.<\/li>\n<li>Reducing stagnation \u2013 removing unnecessary pipes or fittings can help to prevent pools of uncirculated water.<\/li>\n<li>Keeping systems clean &#8211; cleaning and disinfecting water systems regularly can help to prevent the build-up of impurities.<\/li>\n<li>Treatment methods \u2013 using\u00a0<a title=\"water treatment\" href=\"https:\/\/www.nchasia.com\/en-au\/nch-insights\/industry-news\/types-of-water-treatment\">water treatments<\/a>\u00a0are vital in preventing the growth of Legionella.<\/li>\n<\/ul>\n<p>3)\u00a0<strong>Legionella testing<\/strong>\u00a0\u2013 testing for Legionella regularly will provide a clear indication of whether the control measures you have already undertaken are working, or whether you will need to perform a more detailed analysis of the infected system to inform the treatment required.<\/p>\n<p>Do you have concerns about legionella prevention?\u00a0<a title=\"Contact us\" href=\"https:\/\/www.nchasia.com\/en-au\/contact-us\">NCH Chem-Aqua can help you<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>How can I prevent legionella? WHY DO I NEED A LEGIONELLA PREVENTION PLAN? The most common reasons for outbreaks of [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5581,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1,16],"tags":[703,734,717],"class_list":["post-5610","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-all","category-water-treatment","tag-articles","tag-legionella","tag-water-treatment","article_type-articles"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Legionella prevention plan - NCH Vietnam<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.nchasia.com\/vn-vn\/legionella-prevention-plan\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Legionella prevention plan - NCH Vietnam\" \/>\n<meta property=\"og:description\" content=\"How can I prevent legionella? 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