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Why Landlords Must Conduct Legionella Risk Assessments

Aug 31
4 min read
Close-up view of water system pipe with valve in residential property
Close-up view of water system pipe with valve in residential property

Ensuring the safety of tenants is a top priority for anyone who owns or manages rental properties. One often overlooked but critical aspect of this responsibility is managing the risk of Legionella bacteria in water systems. Legionella can cause Legionnaires’ disease, a serious form of pneumonia that can be fatal, especially for vulnerable individuals.


That is why landlords must conduct regular legionella risk assessments. These assessments help identify and control the risks associated with Legionella bacteria in water systems, protecting tenants and meeting legal obligations.



Understanding Legionella and Its Risks in Rental Properties


Legionella bacteria thrive in water systems where temperatures range between 20°C and 45°C. This includes hot and cold water systems, cooling towers, and other water storage or distribution systems commonly found in residential buildings.


If water containing Legionella bacteria is aerosolised, for example through showers or taps, people can inhale contaminated droplets. This can lead to Legionnaires’ disease, which causes symptoms like cough, shortness of breath, fever, and muscle aches. The disease can be severe and even fatal, particularly for older adults, smokers, or those with weakened immune systems.


For landlords, the risk is real. Failure to manage Legionella properly can lead to serious health consequences for tenants and legal penalties for property owners.



Legal Responsibilities for Landlords Regarding Legionella


In the UK, landlords have a legal duty to ensure the safety of their tenants under the Health and Safety at Work Act 1974 and the Control of Substances Hazardous to Health (COSHH) Regulations. The Approved Code of Practice L8 (ACOP L8) provides clear guidance on controlling Legionella risks.


Landlords must:


  • Identify and assess sources of risk from Legionella bacteria in their properties.

  • Prepare a written scheme for controlling the risk.

  • Implement and manage control measures.

  • Keep records of inspections, maintenance, and monitoring.

  • Review and update risk assessments regularly.


Ignoring these duties can lead to enforcement actions, fines, or even prosecution. More importantly, it puts tenants’ health at risk.



What a Legionella Risk Assessment Involves


A legionella risk assessment is a thorough inspection of a property’s water systems to identify potential sources of Legionella bacteria. It involves:


  • Checking water storage tanks, pipes, taps, showers, and other outlets.

  • Measuring water temperatures to ensure they are outside the range where Legionella thrives.

  • Looking for signs of stagnation, corrosion, or scale build-up that can encourage bacterial growth.

  • Reviewing cleaning and maintenance records.

  • Identifying any vulnerable tenants who may be at higher risk.


The assessment results in a report that outlines the risks found and recommends actions to reduce or eliminate them.



How Professional Services Help Landlords Stay Compliant


Managing Legionella risks can be complex, especially for landlords with multiple properties or limited technical knowledge. That is where professional services come in.


For example, Total Standards offers comprehensive legionella risk assessment services tailored for landlords. Their experts carry out detailed inspections and provide clear, actionable reports. This helps landlords meet their legal duties without the stress of managing the process themselves.


Another useful service is WaterSafe Legionella Testing Kits, which allow landlords to perform regular water testing between professional assessments. These kits provide quick results and help landlords monitor water quality effectively.


Using professional services ensures that risk assessments are thorough, accurate, and compliant with current regulations. It also provides peace of mind that tenants are protected.



Eye-level view of technician inspecting water tank in residential building
Eye-level view of technician inspecting water tank in residential building


Practical Steps Landlords Can Take to Reduce Legionella Risks


Beyond risk assessments, landlords can take several practical steps to reduce the risk of Legionella in their properties:


  • Maintain water temperatures: Keep hot water above 50°C and cold water below 20°C to prevent bacterial growth.

  • Flush unused outlets: Regularly run taps and showers that are not used often to avoid water stagnation.

  • Clean and disinfect water tanks: Schedule regular cleaning to remove sediment and biofilm where bacteria can grow.

  • Fix leaks and corrosion: Repair any plumbing issues promptly to prevent contamination.

  • Educate tenants: Provide information on how to reduce risks, such as running taps after periods of non-use.


These actions, combined with regular legionella risk assessments, form a strong defence against Legionella outbreaks.



Why Regular Assessments Are Essential


Legionella risks can change over time. Water systems age, tenants change, and maintenance schedules vary. A one-time assessment is not enough.


Regular legionella risk assessments help landlords:


  • Detect new or emerging risks early.

  • Ensure control measures remain effective.

  • Keep up with changes in regulations.

  • Protect tenants continuously.


For example, Total Standards recommends scheduling assessments at least every two years or more frequently if the property has complex water systems or vulnerable occupants.



High angle view of water system maintenance checklist on clipboard
High angle view of water system maintenance checklist on clipboard


How to Choose the Right Legionella Risk Assessment Service


When selecting a service provider, landlords should consider:


  • Experience and qualifications: Look for companies with certified risk assessors and a strong track record.

  • Comprehensive reporting: The report should be clear, detailed, and include practical recommendations.

  • Ongoing support: Choose providers who offer follow-up services, training, and advice.

  • Local knowledge: Providers familiar with UK regulations and local conditions can offer better guidance.


Total Standards is an example of a trusted provider that meets these criteria, offering a one-stop solution for property compliance.



Final Thoughts on Legionella Risk Assessments for Landlords


Legionella risk assessments are not just a legal requirement. They are a vital part of keeping rental properties safe and protecting tenants’ health.


By understanding the risks, fulfilling legal duties, and using professional services like those from Total Standards, landlords can manage Legionella effectively. Regular assessments and practical maintenance reduce the chance of outbreaks and the serious consequences that follow.


If you want to learn more about how to protect your properties, consider arranging a legionella risk assessment for landlords today. Taking this step shows you care about safety and compliance, making your properties better places to live.



This article is for informational purposes only and does not replace professional legal or health advice.

 
 

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STANDARDS

© 2026 TOTAL STANDARDS.

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