Is a Legionella risk assessment a legal requirement for landlords?

Yes. Under the Health and Safety at Work Act 1974 and the Control of Substances Hazardous to Health Regulations 2002, landlords have a duty of care to assess and manage the risk of Legionella in their rental properties. HSE ACOP L8 and HSG274 set out the specific requirements for managing Legionella in water systems. The HSE's guidance for landlords of residential properties confirms that a written risk assessment is required, and that appropriate control measures must be in place and reviewed regularly.

How often should a Legionella risk assessment be carried out?

A Legionella risk assessment should be reviewed regularly — the HSE recommends at least every two years, or more frequently if significant changes are made to the water system, if there is reason to believe the risk may have changed, or if a new tenancy begins in a property that has been vacant for an extended period. A full re-assessment is required after any significant alterations to the plumbing system, heating system or water storage arrangements.

What does a Legionella risk assessment involve?

An S2F Legionella risk assessment is carried out by a trained assessor using Touchright software. The assessor inspects all water sources in the property — including hot and cold water storage tanks, pipework, showers, taps and any other outlets — and records their temperature, condition and configuration. Risk factors including pipework dead legs, infrequently used outlets and inadequate temperatures are identified. The assessment is completed with a written report detailing the findings and any recommended control measures or remedial actions.

What happens if a landlord does not carry out a Legionella risk assessment?

Failure to carry out a Legionella risk assessment exposes a landlord to significant legal and financial risk. If a tenant or visitor contracts Legionnaires' disease from a property where no assessment has been carried out and appropriate controls are not in place, the landlord could face prosecution under the Health and Safety at Work Act 1974 and civil liability for any resulting illness. The HSE has the power to issue improvement notices, prohibition notices and fines. Landlord insurance policies may also be invalidated if a Legionella risk assessment has not been carried out.

HEALTH & SAFETY COMPLIANCE

Professional Legionella Risk Assessments for Landlords and Property Managers

Every landlord has a legal duty of care to assess the risk of Legionella in their rental properties. It is not optional, and it is not something to leave until a problem arises. S2F Property Services provides professional Legionella risk assessments carried out by trained assessors using Touchright software — producing clear, comprehensive written reports that demonstrate your compliance and protect your tenants, your property and your legal position.

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WHAT IS A LEGIONELLA RISK ASSESSMENT?

Understanding the Legionella Risk for Landlords

Legionella bacteria are naturally present in water environments, but they become dangerous when they proliferate within man-made water systems — particularly where water is stored or maintained at temperatures between 20°C and 45°C. In these conditions, Legionella can multiply rapidly. If contaminated water is then dispersed as fine droplets or aerosols — most commonly through showers, taps and spray outlets — the bacteria can be inhaled, potentially causing Legionnaires' disease. This is a severe and potentially fatal form of pneumonia. Pontiac fever, a milder flu-like illness, is a less serious but more common result of Legionella exposure. Both are preventable with proper water system management.

For residential landlords, the legal framework is clear. Under the Health and Safety at Work Act 1974, landlords have a general duty of care to ensure the health and safety of people who use their properties. The Control of Substances Hazardous to Health Regulations 2002 (COSHH) specifically covers biological hazards including Legionella. The HSE's Approved Code of Practice ACOP L8 — alongside the more detailed technical guidance in HSG274 — sets out the specific duties that apply to water systems in residential properties. The HSE's guidance for landlords and managing agents of residential accommodation confirms that landlords must assess the risk, implement appropriate control measures, and review those measures on a regular basis. A written record of the risk assessment must be kept.

Many landlords assume that Legionella risk assessments are only relevant to large commercial buildings with complex water systems. This is a misunderstanding. Any residential property with a hot and cold water system presents a potential risk that must be formally assessed. Properties that have been vacant for extended periods, properties with cold water storage tanks in loft spaces, properties with infrequently used outlets or complex pipework layouts, and properties with combination boilers where water temperatures may vary significantly all represent elevated risk profiles that require documented assessment and ongoing management. S2F's Legionella risk assessments give landlords the written evidence they need to demonstrate compliance, and the practical recommendations they need to reduce risk to the lowest practicable level.

WHAT'S INCLUDED

What Our Legionella Risk Assessment Covers

Full Water System Inspection

The assessor carries out a comprehensive inspection of the entire water system at the property — including all hot and cold water storage tanks, pipework runs, boilers, cylinders, showers, taps and any spray outlets. The layout, condition and configuration of the system is documented in full, forming the foundation of the risk assessment.

Temperature Testing

Water temperatures are measured and recorded at key outlets across the property. Hot water should be stored at 60°C or above and delivered at 50°C or above at outlets within one minute. Cold water should be maintained below 20°C. Temperature deviations outside these parameters are flagged as risk factors and documented with specific remedial recommendations.

Risk Factor Identification

The assessment identifies specific risk factors within the property's water system — including dead legs in pipework where water can stagnate, infrequently used outlets where bacteria can proliferate, inadequate insulation on cold water pipework, and any conditions that create a temperature range favourable to Legionella growth. Each risk factor is recorded with its severity and the recommended control measure.

Touchright Digital Report

The assessment is recorded and produced using Touchright software — a purpose-built platform for property compliance assessments that generates consistent, professional written reports with timestamped data, photographic evidence and a clear findings structure. Every report produced by S2F assessors through Touchright meets the standard required for HSE compliance documentation.

Remedial Action Recommendations

Where the assessment identifies control measures that are required — or improvements that are recommended — these are set out clearly in the report with prioritised action points. This gives the landlord or property manager a clear action plan, not just a list of findings. Urgent risks are distinguished from longer-term improvement recommendations so that the most critical issues are addressed first.

Formal Written Risk Assessment

The completed Legionella risk assessment is a formal written document that satisfies the HSE's requirement for a documented risk assessment under ACOP L8. It can be retained as evidence of compliance, provided to local authority inspectors or insurers on request, and used as the basis for subsequent review assessments. The report is delivered digitally within 24 hours of the visit.

WHY CHOOSE S2F

Why Landlords and Agents Choose S2F

Trained Assessors

Every Legionella risk assessment is carried out by a trained assessor with a thorough understanding of ACOP L8, HSG274 and the specific requirements that apply to residential water systems. You are not getting a tick-box exercise — you are getting a substantive assessment by someone who understands the risks and the regulatory requirements.

Touchright Software for Consistent Reports

S2F uses Touchright for all Legionella risk assessments, producing professional, standardised digital reports that carry the credibility and consistency that compliance documentation requires. Whether you are managing one property or a portfolio of fifty, the reporting format is consistent and the documentation is always fit for purpose.

Legal Compliance Expertise

The Legionella legal landscape for landlords can be confusing — duty of care obligations, ACOP L8, review frequencies, record-keeping requirements. Our team understands these obligations in full and ensures that every assessment is carried out and documented in a way that satisfies the full scope of the landlord's legal duty of care under current HSE guidance.

Nationwide Coverage

S2F has active coverage across the UK — from Newcastle to Cardiff, Liverpool to Norwich, and everywhere in between. Wherever your properties are located, we can arrange a qualified assessment at the time that suits you, without the delays or limitations that come with using a local-only provider who cannot scale to your portfolio's geography.

We Have Never Missed a Booking

In our entire history, S2F has never failed to fulfil a confirmed appointment. When an assessor has been unavailable at short notice, we have sourced cover, coordinated logistics and attended regardless. Our commitment to every confirmed booking is not a marketing claim — it is our actual operational record, and it is the standard we hold ourselves to on every single appointment.

7-Day Service

Compliance requirements do not follow a Monday-to-Friday schedule, and neither do we. S2F operates seven days a week to accommodate property handovers, new tenancy starts and compliance programmes that require weekend access. Saturday and Sunday assessments are available at no additional premium.

WHO WE WORK WITH

Who Uses S2F for Legionella Risk Assessments?

Letting Agents

Managing compliance across a portfolio of landlord clients means tracking assessment review dates, ensuring properties are assessed before new tenancies and keeping records that can be produced at short notice. S2F makes this manageable. We provide a single, reliable service for Legionella assessments across multiple properties and postcodes, with consistent Touchright reports and fast delivery. You can offer your clients complete compliance coverage without the administrative burden of managing multiple contractors.

Landlords

Whether you have one buy-to-let or a growing portfolio, the Legionella duty of care applies to every property you rent. The consequences of ignoring it — prosecution, civil liability, invalidated insurance — are serious. S2F makes the process straightforward. Book online or by phone, we attend the property at a time that suits you or your tenant, and you receive your Touchright risk assessment report within 24 hours. Keep it on file, and book a review when the recommended date approaches. It is that simple.

Councils & Housing Associations

Local authorities and registered social landlords have some of the most complex Legionella compliance obligations in the residential sector — large portfolios, older housing stock, communal water systems and a high duty of care to vulnerable residents. S2F has the capacity to support bulk Legionella assessment programmes across multiple properties and locations, with consistent Touchright documentation and the logistical capability to deliver assessments at scale without disruption to tenants or housing management operations.

FREQUENTLY ASKED QUESTIONS

Legionella Risk Assessment FAQs

What is a Legionella risk assessment?

A Legionella risk assessment is a formal evaluation of the risk of Legionella bacteria developing and spreading through a property's water system. Legionella bacteria thrive in water stored or maintained at temperatures between 20°C and 45°C, and can cause Legionnaires' disease — a potentially fatal form of pneumonia — when contaminated water droplets are inhaled. A risk assessment identifies potential sources of risk within the water system and sets out the control measures required to eliminate or minimise that risk.
Is a Legionella risk assessment a legal requirement for landlords?

Yes. Under the Health and Safety at Work Act 1974 and the Control of Substances Hazardous to Health Regulations 2002, landlords have a duty of care to assess and manage the risk of Legionella in their rental properties. HSE ACOP L8 and HSG274 set out the specific requirements for managing Legionella in water systems. The HSE's guidance for landlords of residential properties confirms that a written risk assessment is required, and that appropriate control measures must be in place and reviewed regularly.
How often should a Legionella risk assessment be carried out?

A Legionella risk assessment should be reviewed regularly — the HSE recommends at least every two years, or more frequently if significant changes are made to the water system, if there is reason to believe the risk may have changed, or if a new tenancy begins in a property that has been vacant for an extended period. A full re-assessment is required after any significant alterations to the plumbing system, heating system or water storage arrangements.
What does a Legionella risk assessment involve?

An S2F Legionella risk assessment is carried out by a trained assessor using Touchright software. The assessor inspects all water sources in the property — including hot and cold water storage tanks, pipework, showers, taps and any other outlets — and records their temperature, condition and configuration. Risk factors including pipework dead legs, infrequently used outlets and inadequate temperatures are identified. The assessment is completed with a written report detailing the findings and any recommended control measures or remedial actions.
What happens if a landlord does not carry out a Legionella risk assessment?

Failure to carry out a Legionella risk assessment exposes a landlord to significant legal and financial risk. If a tenant or visitor contracts Legionnaires' disease from a property where no assessment has been carried out and appropriate controls are not in place, the landlord could face prosecution under the Health and Safety at Work Act 1974 and civil liability for any resulting illness. The HSE has the power to issue improvement notices, prohibition notices and fines. Landlord insurance policies may also be invalidated if a Legionella risk assessment has not been carried out.

COVERAGE

Legionella Assessments Across the UK

S2F provides Legionella risk assessments across England, Wales and Scotland. Our network of trained assessors covers all major urban centres and their surrounding areas, enabling us to reach properties across the full breadth of the country without unnecessary delays or restricted availability.

We are currently active across London and the Greater London area, the North West, Yorkshire, the North East, the Midlands, Wales, and the South West. If your property portfolio spans multiple regions, we have the capacity and the coverage to manage your Legionella assessment programme as a single, coordinated service.

London Manchester Birmingham Leeds Bristol Newcastle Sheffield Liverpool Nottingham Cardiff