Legionnaires Disease: Legionella Bacteria in Hot Water Tanks
Many people don’t realise that hot water tanks can be a breeding ground for the bacteria that causes Legionnaires Disease.
Legionnaires Disease is a very serious condition, being a potentially fatal illness.
The good news is that it is totally preventable.
You need to be informed to protect your family’s health…
What is Legionnaires Disease & How to Prevent it?
♦ Legionnaires Disease, or Legionellosis, is a illness caused by a bacteria, Legionella pneumophila.
♦ It is a respiratory disease that can cause severe pneumonia and it is sometimes fatal.
♦ Keeping the hot water tank set to a minimum of 60°C prevents bacteria growth.
♦ Turning your hot water tank down, to save money, can backfire if you go below 60°C
♦ Plumbers know to set the temperature correctly
♦ The best advice is to leave it as set by your plumber
Legionnaires Disease Hot Water Heater
Added Hazard with Electric Storage Tank Hot Water Heaters
The World Health Organisation -- WHO -- recommends that water be heated and stored at 60°C.
However, Canadian studies have shown, even when the thermostat is set at 60°C, a high percentage -- approximately 40% -- of electric water heaters remain contaminated because of the lower temperature, about 30°C to 40°C at the bottom of the tank.
No water heaters using gas were contaminated.
The authors concluded that, because of design variables, use of an electric water heater was the most significant factor leading to Legionella contamination in hot water in the home.
How can this still go wrong?
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The information in this article is derived from various sources and is believed to be correct at the time of publication. However, the information may not be error free and may not be applicable in all circumstances.