Legionella risk management is essential for ensuring rental properties are safe, compliant, and protected against water hygiene risks. Although Legionnaires’ disease is relatively rare, it can be a serious and potentially fatal form of pneumonia caused by inhaling water droplets contaminated with Legionella bacteria.
For landlords and property managers, understanding Legionella responsibilities is critical for protecting tenants, maintaining safe rental properties, and demonstrating legal compliance.
At No Letting Go, we support landlords and letting agents with property reporting and compliance services to help maintain safe and legally compliant rental properties.
What Is Legionella and Why Is It a Risk?
Legionella is a type of bacteria that can develop in water systems where conditions allow it to grow, particularly in stagnant or poorly maintained water.
The bacteria can become dangerous when contaminated water droplets are inhaled through:
- Showers
- Taps
- Spray systems
- Stored water tanks
Legionnaires’ disease is considered particularly dangerous for:
- Older people
- Smokers
- Individuals with respiratory conditions
- People with weakened immune systems
Landlord responsibilities stem from legislation including the Health and Safety at Work Act 1974 and the Control of Substances Hazardous to Health Regulations (COSHH).
What Is a Legionella Risk Assessment?
What the Regulation Is and Why It Exists
A Legionella risk assessment is a review of a property’s water system to identify conditions where Legionella bacteria could grow and spread.
The purpose of the assessment is to determine whether water systems are being managed safely and whether action is required to reduce risks.
The regulations exist to protect tenants from avoidable health hazards linked to contaminated water systems.
What Landlords Must Do
Landlords are legally required to assess the risk of exposure to Legionella within their rental properties.
Landlords should consider factors such as:
- Water storage tanks
- Little-used outlets or pipework
- Water temperature
- Signs of stagnant water
- Property vacancy periods
Where higher risks are identified, landlords may need to:
- Flush water systems regularly
- Adjust water temperatures
- Arrange professional cleaning and maintenance
- Carry out formal Legionella assessments
Many landlords instruct qualified professionals to complete risk assessments, particularly for HMOs or properties with complex water systems.
Consequences of Non-Compliance
Failure to assess and manage Legionella risks can result in:
- Enforcement action by local authorities or the HSE
- Substantial fines
- Compensation claims
- Potential criminal prosecution
- Insurance complications and reputational damage
Managing Water Systems Safely
What the Regulation Is and Why It Exists
Legionella control is an ongoing responsibility. Water systems can deteriorate over time or become unsafe during periods of low use.
The regulations exist to ensure landlords maintain safe water systems throughout the tenancy.
What Landlords Must Do
Landlords should ensure water systems are properly maintained and regularly used to prevent stagnation.
Practical steps may include:
- Flushing little-used outlets
- Keeping hot water hot and cold water cold
- Removing unused pipework
- Monitoring water tanks for cleanliness
- Addressing plumbing maintenance issues promptly
Routine inspections can help identify leaks, unused bathrooms, or stagnant water risks before they become more serious.
Maintaining records of inspections, maintenance, and assessments helps demonstrate due diligence and compliance.
Consequences of Non-Compliance
Poorly maintained water systems increase the likelihood of bacterial growth and tenant exposure.
Failure to manage known risks may lead to:
- Legal action and enforcement notices
- Civil claims following illness
- Regulatory investigations
- Potential liability even where no illness occurs
Legionella Risks in Empty and Low-Occupancy Properties
What the Regulation Is and Why It Exists
Vacant properties and buildings with low occupancy levels can present increased Legionella risks because water systems may remain unused for extended periods.
Stagnant water creates ideal conditions for bacterial growth.
What Landlords Must Do
Landlords should:
- Flush water systems regularly during vacant periods
- Check taps, showers, and tanks before reoccupation
- Carry out vacant property inspections
- Incorporate water hygiene monitoring into compliance procedures
These steps help reduce risks before new tenants move into the property.
Consequences of Non-Compliance
Neglecting water systems during void periods can significantly increase Legionella risks.
Failure to manage these risks may result in:
- Legal liability
- Enforcement action
- Insurance claim complications
- Potential exposure of tenants or contractors to bacteria
Tenant Communication and Awareness
What the Regulation Is and Why It Exists
Effective Legionella management depends on clear communication between landlords, agents, and tenants.
Tenants should understand the importance of reporting plumbing issues, leaks, or water quality concerns promptly.
What Landlords Must Do
Landlords and property managers should encourage tenants to report:
- Low water temperatures
- Discoloured water
- Unused outlets
- Plumbing leaks
- Irregular water flow
Landlords should also provide guidance following long absences from the property, such as running taps and showers before use after holidays or vacant periods.
Maintaining maintenance and communication records supports wider compliance management.
Consequences of Non-Compliance
Poor communication can result in maintenance issues remaining unresolved, increasing the likelihood of bacterial growth and potential exposure.
Where landlords fail to respond appropriately to known concerns, liability risks may increase significantly.
Why Legionella Compliance Matters
Legionella compliance is about more than simply meeting legal obligations. It forms part of responsible property management and demonstrates a commitment to tenant health and safety.
Proactive risk management also helps landlords and property managers:
- Reduce health and safety risks
- Protect tenants and visitors
- Support insurance compliance
- Demonstrate professionalism and due diligence
- Reduce the likelihood of enforcement action
Maintaining accurate property records and inspection reports provides valuable evidence that risks are being managed appropriately.
How No Letting Go Supports Property Compliance
At No Letting Go, we understand the growing importance of property compliance and tenant safety responsibilities.
Our nationwide property reporting services help landlords and property managers maintain accurate records and support safer property management practices through:
- Legionella risk assessments
- Mid-term property inspections
- Inventory and schedule of condition reports
- Vacant property inspections
- Property compliance support
Our detailed digital reporting systems help landlords demonstrate due diligence, monitor property condition, and manage compliance responsibilities across their rental portfolios.
Final Thoughts
Legionella risk management is an important part of maintaining safe and compliant rental properties. By assessing risks, maintaining water systems correctly, monitoring vacant properties, and keeping accurate records, landlords can reduce health risks while meeting their legal responsibilities.
For landlords and property managers, taking a proactive approach to Legionella compliance helps protect tenants, reduce liability risks, and support professional property management standards.
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