Legionella Risk Assessment Template (Free Download + Guide)

If you are responsible for a property in the UK, carrying out a Legionella risk assessment is not optional it is a legal requirement. Many landlords and business owners search for a Legionella risk assessment template to get started quickly, but while templates can provide a useful structure, they cannot replace professional expertise. HSE enforcement cases repeatedly highlight that poorly completed assessments are “not suitable or sufficient”, which is the most common reason for prosecution.

This guide explains what a Legionella risk assessment template includes, when it can be used, when a professional should be brought in, and how to download a free template to understand what a proper assessment looks like.

What Is a Legionella Risk Assessment Template?

A Legionella risk assessment template is a structured document designed to help record and manage potential risks within a water system. At its core, the template guides you through a systematic review of your property’s water infrastructure, ensuring nothing is overlooked.

A professional-grade template typically includes detailed sections for:

• Documenting the property and system details, including water storage tanks, heaters, pipework, showers, and outlets

• Identifying all potential water sources and usage points

• Monitoring water temperatures and noting any anomalies

• Highlighting risk factors such as stagnant water, low-use areas, or complex pipework layouts

• Recording existing control measures and planning corrective actions

• Maintaining a written scheme of control with responsibility assignments and schedules

Templates are most useful for simple, low-risk properties, such as small residential buildings, where the water system is straightforward. However, for larger or more complex properties, a template alone is unlikely to capture all risks.

Who Needs a Legionella Risk Assessment?

In the UK, anyone responsible for a property — legally referred to as the “duty holder” — must assess and control the risk of Legionella bacteria. This responsibility is outlined under the Health and Safety at Work etc. Act 1974 and supported by the HSE’s Approved Code of Practice L8 (ACoP L8).

Key examples of duty holders include:

Landlords: Even in small domestic rental properties, landlords are responsible for assessing water risks and maintaining proper records. A simple property may require only a basic assessment, but documentation and periodic review are still required.

Employers: Businesses have a duty to protect employees, visitors, and customers. This applies across offices, retail spaces, factories, hotels, care homes, and more.

Facilities Managers: Those managing larger sites must ensure risk assessments are conducted, control measures are implemented, and ongoing monitoring is carried out. They often coordinate with external contractors to maintain compliance.

Letting Agents: While they may arrange assessments and manage compliance for landlords, the legal duty typically remains with the landlord unless formally transferred.

Can You Use a Template Instead of a Professional Assessment?

Templates can be useful in certain circumstances, but only if the property is low-risk and you have the technical knowledge to recognise and control hazards. You should only consider using a template if:

• The property is small and simple

• You understand how water systems function and where risks arise

• You can implement control measures reliably

Even then, DIY templates have limitations. They rarely cover hidden risks such as dead legs, infrequently used outlets, or complex temperature fluctuations. They may also fail to meet legal scrutiny, leaving you exposed to HSE enforcement if something goes wrong.

For most businesses, multi-occupancy sites, or older buildings, a professional risk assessment is strongly recommended.

What a Good Template Should Include

A high-quality Legionella risk assessment template should provide:

• A comprehensive overview of the water system, from storage tanks to outlets

• Asset identification and system mapping to highlight potential problem areas

• Detailed temperature monitoring sections to ensure control limits are met

• Identification of dead legs and low-use areas where bacteria may develop

• A clear risk rating system to prioritise remedial actions

• A written scheme of control assigning responsibilities and detailing monitoring and maintenance schedules

A weak or overly simplistic template may leave gaps, potentially making the assessment unsuitable for legal or regulatory purposes.

Download Your Free Legionella Risk Assessment Template

To help you understand what a full assessment entails, we provide a free, easy-to-use template. This template is ideal for small residential properties, single rental units, or basic record-keeping, but should not replace a professional survey for larger or more complex sites.

Download your free Legionella risk assessment template here.

Use this template as an educational tool to familiarise yourself with what a proper risk assessment includes, and to appreciate why professional expertise is often necessary.

Why You Should Hire a Professional

While templates are a useful starting point, most properties — particularly commercial buildings, multi-occupancy sites, and older systems — require a professional Legionella risk assessment. Certified assessors bring the technical knowledge and experience necessary to identify hidden hazards, assess complex water systems, and deliver reports that are fully compliant with UK regulations and BS 8580 standards.

A professional assessment provides:

Fully Compliant Risk Assessments: Conducted according to Health and Safety at Work etc. Act 1974, HSE ACoP L8, and BS 8580 guidelines, ensuring reports stand up to regulatory scrutiny.

Clear, Actionable Reports: Professionals don’t just identify risks — they explain their significance and provide prioritised recommendations to make compliance straightforward.

Fast Turnaround Times: Compliance is often time-sensitive. Professional assessors can deliver reports promptly to meet deadlines.

Support With Ongoing Compliance: Legionella management is not a one-off task. Professional support includes advice on monitoring, maintenance, and control measures to maintain long-term safety.

Why Using a Professional Matters for Legal Compliance

HSE guidance makes it clear: when prosecutions occur, they nearly always cite unsuitable or insufficient risk assessments. Templates alone rarely satisfy this requirement. Using a qualified, trained contractor protects you, ensures your assessment is legally defensible, and provides a clear plan to reduce and control risk.

Final Thoughts

A Legionella risk assessment template is a helpful tool for understanding the process and documenting basic checks. However, for most properties, professional expertise is essential to ensure the assessment is thorough, compliant, and legally defensible.

If you’re unsure about your property’s risk level or your responsibilities, seeking expert guidance can save time, reduce risk, and ensure full compliance.

Need help or have questions? Contact our team today on 0330 633 6449.