Legionella Risk Assessment
ACoP L8 Compliant Water System Risk Assessments & Reporting
BioSweep® UK provides professional Legionella risk assessments across Hampshire, West Sussex, East Sussex, Surrey, Dorset, and nationwide, supporting landlords, businesses, healthcare, and educational facilities. All assessments follow HSE guidance (ACoP L8 & HSG274), helping duty holders manage water system risks, demonstrate compliance, and protect occupants from Legionella exposure.
Why a Legionella Risk Assessment is Essential
Legionella bacteria can develop in man-made hot and cold water systems where environmental conditions allow growth. These include:
Stored water tanks and calorifiers
Hot and cold water distribution systems
Showers and spray outlets
Dead-leg pipework and stagnation points
Inadequate temperature control
Scale, corrosion and biofilm formation
Legionnaires’ disease is a potentially fatal form of pneumonia caused by inhaling fine water droplets contaminated with Legionella bacteria.
All commercial and rental properties with water systems carry potential risk if not properly assessed and controlled!
Legal Duties & Compliance
Under the Health and Safety at Work etc. Act 1974, the Management of Health and Safety at Work Regulations 1999, and associated legislation, employers, landlords and duty holders must:
Identify and assess sources of Legionella risk
Appoint a competent responsible person
Implement a written scheme of control
Maintain appropriate monitoring and records
Review assessments regularly
Failure to comply can result in enforcement action, fines, or prosecution.
A Legionella risk assessment provides documented evidence of due diligence and forms the foundation of your compliance framework.
Our Legionella Risk Assessment Process
🔹 Full Water System Survey
We conduct a detailed inspection of your water system, including plant, storage, distribution and outlets, to understand system design and identify potential exposure points.
🔹 Risk Identification & Evaluation
We assess conditions known to encourage Legionella growth, including:
Water temperatures between 20–45°C
Stagnation and seldom-used outlets
System modifications or poor maintenance
Inadequate insulation or circulation
🔹 Risk Rating & Prioritised Recommendations
Each identified issue is risk-rated, with practical and proportionate recommendations provided to reduce or control risk.
🔹 Structured Compliance Report
You receive a professional report suitable for:
Landlord compliance documentation
Commercial property management
Insurance requirements
Audit and due diligence
Health & safety record keeping
Not a One-Off Exercise
A Legionella risk assessment must be reviewed:
When water systems are modified
When building occupancy changes
When monitoring identifies concerns
At regular intervals to ensure ongoing compliance
Legionella risk management is a continuous process, not a one-time inspection.
Who We Work With
We provide Legionella risk assessment services for:
Landlords and letting agents
Commercial offices and retail units
Care homes and healthcare environments
Schools and educational premises
Industrial facilities
Insurance-led property management
Serving Hampshire, West Sussex, East Sussex, Surrey, Dorset and supporting clients nationwide.
Why Choose BioSweep® UK?
Compliance-led environmental risk specialists
Clear, structured and practical reporting
Support from independent UKAS-accredited laboratory data
Experience in contamination control and environmental decontamination services
Professional, discreet service for commercial and residential clients
Authoritative Guidance
Our assessments align with:
HSE Approved Code of Practice L8 – The control of Legionella bacteria in water systems
HSE HSG274 Technical Guidance
Health & Safety at Work etc. Act 1974
For further information visit:
Water Sampling & Laboratory Support
Where required, BioSweep® UK can arrange water sampling and microbiological analysis through independent UKAS-accredited laboratories. Laboratory data provides certified analytical results that support your compliance documentation and written control scheme. While sampling is not always mandatory, it may be recommended depending on risk level and system type.