Get a Legionella Risk Assessment Quote from Competent Assessors
Tell us about the building's water systems and we'll match you with competent legionella risk assessors. Compare no-obligation quotes in about a minute, and get the assessment and written scheme the law expects.
Do you need a legionella risk assessment?
If you are an employer, or in control of premises with a water system, yes. Health and safety law requires you to identify and assess the risk of exposure to legionella bacteria and to put in place a written scheme to control it. That applies to ordinary hot and cold water systems, not just cooling towers, and the assessment should be reviewed regularly and whenever the system or its use changes.
- The duty sits under the Health and Safety at Work etc. Act 1974 and COSHH, with the detail in HSE’s Approved Code of Practice L8, Legionnaires’ disease: the control of legionella bacteria in water systems.
- HSE’s legionella guidance expects a competent person to assess the risk, a written control scheme, and records of monitoring and maintenance.
- Risk is highest where water sits between 20°C and 45°C and can be aerosolised: showers, spray taps, cooling towers, spa pools and little-used outlets.
- Assessments are commonly reviewed every two years, and sooner after changes to the system, its use or the people at risk.
Maintained by the ComSurv team and checked against UK government, HSE and professional-body sources. ComSurv is a matching service, not a firm of surveyors or contractors. General information, not legal advice.
What a legionella risk assessment is
A survey of the building’s water systems that identifies where legionella could grow and spread, who could be exposed, and the controls, monitoring and maintenance needed to manage the risk, recorded in a written scheme.
A legal duty on duty holders
Employers and those in control of premises must assess and control the risk.
Covers everyday systems
Hot and cold water, showers and tanks, not only cooling towers.
A written control scheme
Who does what, how often, and the records that prove it.
Reviewed regularly
Typically every two years and after any change to the system.
Matched with the right assessors in three steps.
Tell us what you need
Answer a few quick questions about the property, what you need and your timeline.
We match you with assessors
We shortlist competent legionella risk assessors who cover your area and property type.
Receive quotes and book
Compare no-obligation quotes and book the provider that's right for you.
What the assessment involves
A competent assessor surveys the water systems, including tanks, calorifiers, pipework, outlets and any cooling or spray systems, takes temperatures, identifies dead legs and little-used outlets, and reviews how the system is managed. You receive a risk assessment, a schematic of the system, a written control scheme and a monitoring programme you can follow or contract out.
What it delivers
- A written legionella risk assessment
- A schematic of the water systems
- A written scheme of control and monitoring
- Identified dead legs, risks and remedial actions
- A programme of checks, flushing and temperature monitoring
Who needs it
- Employers and business owners
- Commercial landlords and managing agents
- Facilities managers
- Operators of hospitality, leisure and care premises
Why it matters
- Legionnaires’ disease can be fatal
- The duty applies to ordinary water systems
- HSE can prosecute without an outbreak
- A control scheme is simple once it is written
The risk is in the pipework you never think about.
Dead legs, stored water at the wrong temperature and outlets nobody uses are where legionella grows, and none of them are visible from the office. The assessment maps them, the written scheme controls them, and a simple monitoring routine keeps you compliant and your people safe.
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Qualified, accountable and vetted.
The assessors we match you with are competent legionella risk assessors, many working for members of the Legionella Control Association. ComSurv is a matching service and is not itself a regulated firm.
Legionella Risk Assessment FAQs
How much does a legionella risk assessment cost?+
Is a legionella risk assessment a legal requirement?+
Does it apply to a small office with just taps and a kettle?+
How often should it be reviewed?+
What is a written scheme?+
Who carries out the assessment?+
One property, several obligations. Sort them together.
Most commercial premises carry more than one compliance duty. These are the ones that usually sit alongside this service, or run our compliance check to see everything your property needs in one go.
Get your water systems assessed.
Free, no-obligation, and matched to competent legionella risk assessors who cover your area. Takes about a minute.
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