Landlords May 10, 2018

Landlords Guide to Legionnaires' Disease


Legionnaires' is a pneumonia-like disease commonly caused by the inhalation of small droplets of contaminated water. If untreated Legionnaires' disease can be fatal. 


- Legionella can rapidly multiply in any water system if the water is between 20-45 degrees in any part of the system.

- Legionnaires' Disease cannot be contracted by drinking affected water; the water needs to be dispersed in the air as fine droplets.

- There are over 60 different species of Legionella.

- A recent study suggests Legionella can spread at least 6km by air from the source.


Landlords must assess and control the risk of exposure of tenants to Legionella to ensure their safety.

Control Measures can Include:

- Flushing out the water system before letting the property.

- Ensure cold water tanks have a tight lid to stop debris getting into the system. 

- Setting control parameters to ensure water is stored at the correct temperature.

- Remove any unused pipework.


Tenants should be advised to regularly clean shower heads and in a situation where the property has been left empty for a period of time (Holiday) they should,  on their return should run all taps for 2 minutes before use. 

Landlords can assess the risk themselves and do not need to be professionally trained, however we advise that a competent person is to carry out the assessment. Millbank Lettings can arrange this for you. If you would like to discuss this further or have any other queries please contact our Lettings Team on 01953 450373 or
















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