Staying Safe From Legionella Bacteria

Legionnaires disease is caused by micro bacteria that is present in water. It is a fatal illness and people who are smokers, have weak immune systems or suffer from respiratory illnesses are prone to contracting it. The bacteria causing this – Legionella pneumophila is generally found in minute quantities in natural water sources such as rivers and lakes. If the right set of circumstances prevails, chances are that they will multiply and grow really fast.

The legionella bacteria can find its way into the regular water supply, especially in commercial establishments. This puts a large number of people at risk. That is why the government has now made it mandatory that commercial set ups have their water supply investigated and cleared for legionella.

The experts who conduct legionella risk assessments are certified by the government and their reports are legally valid. You will have to call them onto your premises and they will check every source of water from your tap supply to your air conditioning. If all is clear, you will be given a report to that effect which serves as your documentation for having done the test. If you do have a problem, you will be given ways in which to treat the water and test will be conducted again.

The disease is spread when the bacteria that is suspended in drops legionella preventie of water gets carried by winds into air conditioning systems. In areas where control of the bacteria is poor, the virus can get carried as far as 6km in the wind. As per recommendations, the virus can be killed in temperatures exceeding 50 degrees Celsius. If it does not kill it will at least not allow the bacteria to multiply. It can thrive in temperatures that range between 35 and 45 degrees Celsius. It is where the most reproduction takes place.

It grows very well in temperatures between 20 and 50 degrees celsius. Anything below this range will keep the virus dormant but not dead. The best way to control the virus is to maintain a temperature that is under 20 degrees Celsius and over 50 degrees Celsius. Else it can be controlled with the use of chemicals. One method is by copper-ionization where it removes any sludge which is the primary source of nutrition for the virus. One can also use chlorine dioxide which is another means of controlling the virus. Ultraviolet light as well as ozone also helps in the short run.

Chlorine treatments are useful but will have to done every 3-5 weeks. Copper-silver ionization, used in the right manner can be effective during the week.

Do you need any water treatment? A UK based company provides services in legionella risk assessments