Is a Legionella risk assessment a legal requirement in the UK?

Duty holders must assess and control Legionella risk under COSHH and HSE ACOP L8. For most workplaces and rented housing with a water system, that means a documented risk assessment.

Legionella Risk Assessments UK: LCA-Registered Water Safety Checks | The Testing Lab

August 24, 2026

In shortA Legionella risk assessment is the first legal step for duty holders who manage hot and cold water systems in the UK. The Testing Lab is LCA-registered and assesses systems across England, Scotland and Wales from its National Control Centre in Doncaster.

Key Facts

HSE ACOP L8 and HSG274 require duty holders to assess Legionella risk in water systems.
The Testing Lab is LCA-registered for Legionella risk assessment and water hygiene work.
The same instant quote form covers Legionella, asbestos, and other TTL services.
Assessors work nationwide, with a home-based engineer network and a Doncaster control centre.

What is a Legionella risk assessment?

A Legionella risk assessment inspects the water system, finds conditions that let Legionella grow, and sets out the controls the duty holder must keep in place. It covers storage, distribution, little-used outlets, and assets such as calorifiers, TMVs, and cooling plant. The written scheme of control comes after the assessment. It is not a substitute for it.

Who needs one?

Landlords, facilities managers, NHS estates, schools, care homes, and any employer with a hot and cold water system can have a duty under COSHH and ACOP L8. If people can be exposed, the system needs an assessment. Reviews are needed when the system changes, occupancy changes, or the last assessment is out of date.

What The Testing Lab does

TTL sends an LCA-registered assessor, inspects the system on site, and issues a report the duty holder can act on. If you want the service page, use https://www.thetestinglab.eu/ttl-plc-legionella-services/. If you want a price first, use https://www.thetestinglab.eu/quote-request-asbestos-legionella-specialists-uk/.

Next steps

Looking for Legionella risk assessments? Get an instant quote: https://www.thetestinglab.eu/quote-request-asbestos-legionella-specialists-uk/

Want to know more about Legionella risk assessments? Ask the experts: https://www.thetestinglab.eu/ttl-plc-legionella-services/

Frequently Asked Questions

Is a Legionella risk assessment a legal requirement in the UK?: Duty holders must assess and control Legionella risk under COSHH and HSE ACOP L8. For most workplaces and rented housing with a water system, that means a documented risk assessment.
How do I get a quote for a Legionella risk assessment?: Use the instant quote form at https://www.thetestinglab.eu/quote-request-asbestos-legionella-specialists-uk/. The same form is used for Legionella and asbestos work.