Is a legionella risk assessment a legal requirement in London?

Yes. The Health and Safety at Work Act 1974 and ACOP L8 require duty holders to carry out a suitable and sufficient risk assessment of their water systems in London and across the UK. This applies to virtually all premises with a water system, including offices, care homes, hotels, and rental properties.

Who is responsible for arranging a legionella risk assessment in a rented property in London?

The landlord is the duty holder and is legally responsible for arranging the risk assessment in their London property. This applies to both residential and commercial lettings. The duty cannot be delegated to tenants.

How often should a legionella risk assessment be carried out?

Risk assessments should be reviewed at least every two years, or sooner if there are changes to the water system, building use, or if a case of Legionnaires' disease is suspected. Monthly temperature checks and quarterly sampling are recommended for most commercial properties in London.

How much does a legionella risk assessment cost in London?

Costs depend on the size and complexity of your water system in London. A small residential property may start from £150, while large commercial buildings with complex systems can be several hundred pounds. We provide free, no-obligation quotes tailored to your London property.

What happens if the risk assessment identifies problems?

We provide a prioritised action plan listing all remedial works needed at your London premises, from urgent safety measures to longer-term improvements. We can also carry out any remediation works required, including chlorination and temperature adjustments.

What do we receive at the end of the risk assessment?

You'll receive a comprehensive written risk assessment report with photographic evidence, risk ratings, a prioritised action plan, and recommendations for ongoing monitoring. This documentation supports your ACOP L8 compliance records for your London property.

Legionella Risk Assessment in London

Protect your building occupants with professional legionella risk assessments carried out in full accordance with ACOP L8.

Get a Free Quote Learn More

Is a Legionella Risk Assessment a Legal Requirement?

Yes. Under the Health and Safety at Work Act 1974 and the HSE's Approved Code of Practice L8 (ACOP L8), every duty holder must carry out a suitable and sufficient legionella risk assessment of their water systems. Failure to do so can result in prosecution, unlimited fines, and even imprisonment.

Landlords, employers, building owners, facilities managers, and anyone else with maintenance or operational responsibility for a water system are considered duty holders.

A legionella risk assessment is a legal requirement for virtually all buildings with a water system. Our qualified assessors carry out thorough surveys of your hot and cold water systems, identify hazards, and produce detailed written reports with prioritised action plans — all in accordance with ACOP L8 and HSG274.

What's Included

Full Site Inspection

Comprehensive survey of all hot and cold water systems, pipework, and assets.

Temperature Profiling

Temperature checks at sentinel and representative points throughout the building.

Photographic Record

Detailed photographic documentation of all findings and areas of concern.

Written Risk Report

Full written report with risk ratings, prioritised recommendations, and an action plan.

Schematic Review

Review or creation of water system schematics to identify dead legs and risks.

Ongoing Monitoring Plan

Recommended schedule for re-assessments, temperature checks, and sampling.

Our Process

Get a Quote

Fill in our form or call us and we'll respond within 2 hours with a fixed-price quote.

Site Visit Booked

We confirm a convenient date and time that works around your building's schedule.

On-Site Assessment

Our qualified assessor carries out a thorough inspection of your water systems.

Report Issued

Written report delivered within 5 working days with full findings and risk ratings.

Action Plan

We walk you through any findings and recommendations, answering all your questions.

Ongoing Support

We're available for follow-up questions and future re-assessments at no extra charge.

How Much Does Legionella Risk Assessment Cost?

Costs depend on the size of your property, the complexity of your water system, and access requirements. A small residential property may start from around £150, while larger commercial properties are priced individually. We'll provide a fixed-price quote within 1 working day — with no obligation.

Get Your Free Quote

Common Issues We Find

•Water temperatures between 20°C and 45°C — the ideal legionella growth range
•Dead legs and stagnant sections of pipework harbouring bacteria
•Inadequate or missing risk assessments leaving duty holders exposed
•Poor record-keeping making compliance impossible to demonstrate
•Infrequently used outlets creating stagnation risks

Who Needs This

Any person responsible for a water system in a workplace, rented property, or public building must carry out a legionella risk assessment. This includes landlords, facilities managers, building owners, local authorities, and NHS trusts. Under HSE guidance ACOP L8, failure to assess legionella risks can result in prosecution and unlimited fines.

Available Across London

Central London North London South London East London West London

Frequently Asked Questions

Ready to Book Your Legionella Risk Assessment in London?

Get a free, no-obligation quote from our London-based water hygiene team.

Get a Free Quote