LTM Midlands Ltd

Legionella Testing & Monitoring

Legionella Testing & Monitoring

Tenant Guide

Water Hygiene

This important guide aims to give you information on what precautions you can take within your home to protect you from Legionnaires’ disease.

What is it?

Legionellosis is a collective term for diseases caused by legionella bacteria including the most serious Legionnaires’ disease, as well as the similar but less serious conditions of Pontiac fever and Lochgoilhead fever.

Legionnaires’ disease is a potentially fatal form of pneumonia and everyone is susceptible to infection. The risk increases with age but some people are at higher risk including:

  • people over 45 years of age
  • smokers and heavy drinkers
  • people suffering from chronic respiratory or kidney disease
  • diabetes, lung and heart disease
  • anyone with an impaired immune system

The bacterium Legionella pneumophila  and related bacteria are common in natural water sources such as rivers, lakes and reservoirs, but usually in low numbers.

They may also be found in purpose built water systems such as domestic hot and cold water systems, spa pools and  evaporative condensers.

If conditions are favourable, the bacteria may grow increasing the risks of Legionnaires’ disease and it is therefore important to control the risks by introducing appropriate measures outlined in:-

Legionnaires' disease - The control of legionella bacteria in water systems (ACOP L8)

Where does it come from?

Legionella bacteria are widespread in natural water systems, e.g. rivers and ponds.

However, the conditions are rarely right for people to catch the disease from these sources. Outbreaks of the illness occur from exposure to legionella growing in purpose built systems where water is maintained at a temperature high enough to encourage growth, e.g. hot and cold water systems, spa pools, cooling towers and evaporative condensers used in all sorts of premises (domestic, work and leisure).

How do people get it?

People contract Legionnaires' disease by inhaling small droplets of water (aerosols) suspended in the air containing the bacteria. Certain conditions increase the risk from legionella if:

  • The water temperature in all or some parts of the system is between 20°C - 45°C, which is suitable for growth
  • It is possible for breathable water droplets to be created and dispersed, e.g. aerosol created by shower heads, water outlets, spa baths
  • Water is stored and/or re-circulated
  • There are deposits that can support bacterial growth providing a source of nutrients for the organism, e.g. rust, sludge, scale, organic matter and biofilms
  • Outlets are used infrequently
  • The system contains dead ends or unused pipe work, e.g. hot water feed for cold fill only machine

Reducing the risk of Legionella

The risk of Legionella causing illness in small domestic properties is exceedingly low.

Possibly the biggest risk is when you have been away from the property for more than a week or so, e.g. on holiday, or there are additional taps/showers/toilets that are not used daily. Good practice in this situation is simply:

  • Run the hot water taps (a very unlikely source anyway) for a minimum of 60 seconds
  • Flush shower heads for a minimum of 60 seconds (to do this, remove from holder before turning on the shower, then hold down over plug hole to lessen risk of inhaling sprayed droplets)
  • Shower heads should be dismantled and cleaned of scale and debris every 3 - 6 months
  • Keep the hot water on your boiler system at a temperature of minimum 50°C - 60°C WARNING: BE AWARE OF SCALDING!
  • Flush the toilet twice to circulate fresh water through the system and empty the cistern

Ensuring your safety

Owners and managers of private rented property have a legal duty of care to ensure that their tenants and visitors can use the property safely.

If you have received a copy of this leaflet, your Landlord or Letting Agent has appointed us to undertake a risk assessment at your property and to ensure proper control and preventative measures have been put in place for your well being.

Whilst undertaking the assessment we will:

  • Identify and assess any risks
  • Prevent or control the risks where possible
  • Undertake a water sample analysis
  • Keep thorough records
  • Review the risks regularly

The Health & Safety Executive is the government body responsible for water hygiene and Legionnaires’ disease.

Further advice and information can be viewed on their website:

Tenant Guide Brochure (pdf)

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Trent Lane, Castle Donington, Derby DE74 2NP
Further information

Why agents choose to use LTM Midlands

LTM Midlands water
  • Agent online management 24/7.
  • HTTPS Secure Portal - username and password protected.
  • Automated landlord and tenant notifications.
  • Manage and archive your testing certificates and risk assessments.
  • Assessments available as they are undertaken and uploaded.
  • Full support services including remediation for dangerous positive legionella findings.