Employers and those in charge of commercial premises have a responsibility to ensure that the building is safe from Legionella bacteria, which can lead to the potentially fatal Legionnaires’ disease. But what is Legionnaires’ disease and how can you ensure your building is safe from it?
Legionnaires' disease is a serious form of pneumonia that infects the lungs.
It is a severe and potentially fatal disease that is especially dangerous to people who:
It is rare for babies or children to catch the disease.
Legionnaires’ disease is caused by a bacterium called Legionella pneumophila which lives in natural water sources such as lakes, reservoirs, rivers and streams. It can also be found in man-made water systems such as hot and cold water systems, cooling towers and spas.
Man-made environments can contain the perfect conditions for Legionella bacterium to multiply and produce the water droplets that carry the bacterium.
These generally tend to be found in industrial or commercial premises – it is rare that Legionnaires' disease is caught in the home.
You can catch Legionnaires' disease by inhaling water droplets containing the Legionella bacterium. These water droplets can then make their way into the lungs via aspiration.
No. People who are infected cannot transmit the disease. There are no special precautions that need to be taken around someone with the disease.
If Legionnaires’ disease is caught in the early stages and treated, a healthy patient should make a full recovery. Patients with existing health issues that affect the respiratory system or compromise the immune system may suffer prolonged hospitalisation, complications or even, in the worst cases, death. Treatment is usually in the form of antibiotics.
As the disease is a form of pneumonia, it can feel like severe flu. Symptoms may include a high fever, chills, cough, muscle aches, headaches, and diarrhoea. Symptoms will appear between two to ten days after contracting the disease.
If treatment proves effective, then patients may suffer no long-term effects. But if it is ineffective then they may suffer a range of on-going issues such as fatigue, neurological damage or neuromuscular damage.
If you are an employer, or someone in control of premises (e.g. landlord), you have a legal duty to understand and manage legionella risks.
You must understand how to:
For further information visit the Health and Safety Executive (HSE) website.
In the United Kingdom, there is a legal requirement for any company with five or more employees to follow the Health and Safety at Work etc Act 1974 and carry out a Legionella risk assessment to assess the risk of Legionnaires’ disease on their site and then to record of any significant findings – retaining the results of any inspections, checks or tests for a minimum of five years.
The aim of a legionella risk assessment is to help you identify real risks and to provide you with the steps to take in order to remedy any problems.
The Health and Safety Executive (HSE) Approved Code of Practice ACOP L8 has been developed to help business owners and landlords conform to the legislation and carry out its requirements.
There is also a legal requirement for employers to report cases of Legionnaires' disease that may have been acquired at their premises to the Health and Safety Executive.
Legionella training is an essential and mandatory component of any Legionella control management programme. As a duty holder or responsible person, you are not legally required to complete training to perform your duties. However, training forms a big part of a person's ability to work competently and safety.
There are a number of accredited Legionella training programmes. City & Guilds and Highfield Awarding Body for Compliance are the two most well-known accreditation bodies with the most relevant and up to date course content. On completing training, individuals receive a recognised certification. The one-day courses are run by approved training centres and trainers, including WCS Group.
There are also a number of basic safety measures you can implement to protect against the buildup of Legionella bacteria in your building. These include: