Legionella is a bacteria, which is a member of the family Legionellaceae. Legionella acquired its name after an outbreak in the US in 1976. Then it was an unknown mystery disease which caused many sickened and deaths. In 1977 this bacteria was named legionella.

Legionella bacteria

The bacteria which causes the disease, is Legionella Pneumophila. It can be found in groundwater and in drinking water, but in such small quantities that the bacteria do not pose a risk. The legionella bacteria is only dangerous if it can reproduce into higher counts. The legionella bacteria only multiplies when:

  • the water temperature is between the 20 and 50 degrees Celsius
  • there is oxygen and nutrition available for the bacteria

Legionella problem

When there is excess legionella bacteria found in the water system, there is a legionella problem.

Legionella detection

For the detection of the legionella bacteria in water water samples and analyses are used. For more information see ‘water analyses’.

Legionella prevention

There are a number of proven techniques to prevent the legionella bacteria from growing or multiplying. Making the right choice, you will need to take a good look at the different issues. Maintenance, efficacy, costs (investment and returning) and possible side effects. For more information ‘water treatment’.