As a landlord, ensuring the health and safety of your tenants is not just a moral responsibility, it’s a legal one.
One of the key aspects of tenant health that many landlords overlook is the risk of Legionnaires’ disease, a severe form of pneumonia caused by the Legionella bacteria. These bacteria thrive in water systems, particularly in situations where the water is stagnant or poorly maintained.
In this comprehensive guide, we will explore the legal responsibilities landlords have regarding Legionella control and offer practical steps to ensure your properties remain compliant with water safety regulations.
What are Legionella Bacteria and why are they a Concern for Landlords?
Legionella is a type of bacteria that naturally occurs in freshwater environments like rivers and lakes. However, it can pose a serious health risk when it multiplies in man-made water systems, such as those found in rental properties.
Legionnaires’ disease occurs when a person inhales aerosolized water droplets containing the bacteria. Symptoms of Legionnaires’ disease include fever, chills, and pneumonia-like symptoms, which can be severe, particularly for those with weakened immune systems, the elderly, and smokers.
The UK Health and Safety Executive (HSE) outlines that landlords must take specific steps to assess and control the risk of Legionella in water systems, particularly in properties with shared or centralised water systems and during periods when properties are vacant or rarely used.
Legal Obligations for Landlords Regarding Legionella Control
Under the Health and Safety at Work etc. Act 1974, landlords are legally required to ensure that their tenants are not exposed to health risks, including Legionella. This includes taking steps to assess the risk, implementing control measures, and regularly reviewing the water systems in their properties.
The key points landlords must be aware of include:
- Conducting a Legionella risk assessment: This must be done at the start of any tenancy and whenever there are significant changes, such as renovations or modifications to the water system.
- Implementing control measures: Based on the Legionella risk assessment, landlords must implement measures such as temperature control and regular flushing of unused outlets to prevent Legionella growth.
- Ongoing monitoring and maintenance: Regular inspections and record-keeping are essential to ensure continued compliance and safe water conditions.
How Legionella Can Thrive in Vacant or Rarely Used Properties
Vacant or rarely used properties pose a significant risk for Legionella growth. When water sits stagnant in pipes, tanks, or outlets without regular use or movement, it creates an ideal breeding ground for Legionella bacteria.
The bacteria thrive in temperatures between 20°C and 45°C, which is the temperature range commonly found in unmaintained water systems. This makes properties that are left vacant or unused for extended periods particularly vulnerable.
Best Practices for Managing Water Safety in Vacant Properties
To prevent Legionella growth during vacant periods, landlords should implement the following practices:
1. Flush All Outlets Before Re-letting or After Disuse
Before a new tenant moves in or after a period of vacancy, flush all outlets thoroughly, including taps, showers, and toilets. This helps to remove stagnant water that could be harboring Legionella bacteria. Running water through the system at full pressure for several minutes will help ensure the pipes and outlets are properly cleaned.
2. Keep Water Flowing Through the System
Whenever possible, keep water flowing through the system during vacant periods. If the property is not regularly used, consider setting up a routine for someone to check the system and run water through the outlets to prevent stagnation.
3. Drain Down Water Systems if the Property Will Be Empty for an Extended Period
For properties that will be vacant for several weeks or months, draining down the water system is a good preventive measure. This means emptying the hot and cold water systems to reduce the risk of bacterial growth. It’s also essential to make sure any standing water in tanks, pipes, and outlets is removed.
4. Maintain Safe Water Heater Temperatures
Water heaters should always be set to maintain hot water above 60°C and cold water below 20°C. These temperatures prevent Legionella from multiplying and are crucial for ensuring water safety. If the property is vacant and the water heater is not in regular use, landlords should arrange for periodic checks or set up timers to keep the water at safe temperatures.
5. Clean Shower Heads and Taps Regularly
Shower heads and taps should be regularly cleaned and maintained to prevent biofilm buildup, a key factor in Legionella proliferation. Biofilm is a slimy layer of bacteria that can form in areas where water stagnates, such as in showerheads or taps that aren’t frequently used.
Legionella Risks in Large Residential Blocks with Shared Water Tanks
For landlords managing large residential blocks, HMOs (Houses in Multiple Occupation), or properties with shared or centralised water systems, the risk of Legionella is often higher. These buildings often have large storage tanks that supply water to multiple units.
If these tanks are not adequately maintained or are poorly insulated, Legionella bacteria can spread easily throughout the system, potentially affecting multiple tenants at once.
Best Practices for Managing Water Safety in Multi-Unit Properties
For multi-unit residential buildings, the following steps should be followed to reduce the risk of Legionella:
1. Regularly Inspect and Maintain Water Tanks
Tanks should be regularly inspected to ensure they are in good condition. This includes checking the lids, insulation, and access points for any signs of wear or damage. Damaged tanks or poor insulation can create the right conditions for bacterial growth. Tanks should also be properly sealed to prevent contamination.
2. Monitor Water Temperatures and Flush Infrequently Used Outlets
Monitoring water temperatures is essential to prevent Legionella growth. Ensure that hot water is maintained above 60°C and cold water below 20°C. It’s also important to flush infrequently used outlets such as communal showers, laundry rooms, and kitchens regularly. This will ensure that water does not stagnate in the pipes.
3. Keep Shower Heads and Taps Clean
As with vacant properties, clean showerheads and taps regularly in multi-unit buildings to avoid the buildup of biofilm where bacteria can thrive. Regular cleaning is especially important in communal areas where tenants may not always have the opportunity to clean fixtures themselves.
4. Maintain Proper Maintenance Logs
Maintain detailed maintenance logs for inspections, flushing routines, temperature checks, and cleaning tasks. Keep records of who is responsible for Legionella control and ensure that the person or team managing the property is competent and properly trained in Legionella risk management.
Why Legionella Compliance Is Crucial for Landlords
As a landlord, managing Legionella risk is an essential part of maintaining safe and healthy living conditions for your tenants. By following best practices for vacant properties, shared water systems, and regular maintenance, you can significantly reduce the risk of Legionnaires’ disease and stay compliant with UK water safety laws.
Remember that failure to control Legionella bacteria can lead not only to health risks for tenants but also to legal consequences and costly fines. Ensure that you conduct regular risk assessments, implement effective control measures, and keep detailed records. If in doubt, consult with a Legionella risk specialist to ensure your property remains compliant and safe.
By taking proactive steps to manage water safety, you protect your tenants, your property, and your reputation as a responsible landlord.
