Legionella Risk Assessments for Commercial & Residential Properties
Professional Legionella risk assessments supporting legal compliance, effective risk control, and clear duty of care management.
What a Legionella Risk Assessment Is
A Legionella Risk Assessment (LRA) is a structured evaluation of water systems to identify conditions that could allow Legionella bacteria to grow and spread.
The assessment focuses on:
Identifying risk sources within the system
Evaluating how water is stored, distributed, and used
Determining whether existing control measures are adequate
The outcome is a documented assessment with prioritised actions that help duty holders manage risk in a controlled and proportionate way.
This is about effective risk management, not box-ticking.
Why Legionella Risk Assessments Are a Legal Requirement
UK health and safety legislation places a duty on those responsible for premises and water systems to assess and control Legionella risk.
This responsibility applies to:
Employers and business owners
Landlords and managing agents
Organisations with control over water systems
Where risks are not properly assessed and managed, organisations may face enforcement action, legal exposure, or operational disruption.
A suitable and sufficient Legionella Risk Assessment forms the foundation of compliant water safety management.
Properties That Require a Legionella Risk Assessment
A Legionella Risk Assessment is required for most properties with stored or distributed water, including:
Commercial buildings
Residential blocks and HMOs
Healthcare and education facilities
Hotels and leisure environments
Industrial and manufacturing sites
Any property with hot and cold water systems
If water is stored, heated, or circulated, the risk must be assessed.
What Our Legionella Risk Assessment Covers
Flowsafe Compliance assessments are structured, comprehensive, and site-specific.
Each assessment typically covers:
Full identification of water system assets
Hot and cold water services
Storage tanks and calorifiers
Showers and all relevant outlets
Pipework configuration, including dead legs and low-use sections
Temperature profiling across the system
The focus is on understanding how the system actually operates, not generic assumptions.
Our Assessment Methodology
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Site Inspection & System Review
A competent assessor inspects the premises and reviews system layout and usage.
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Asset Register Creation
All relevant water system components are identified and recorded.
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Temperature Checks & Observations
Outlet and system temperatures are measured and recorded.
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Risk Evaluation & Prioritisation
Findings are assessed against guidance to determine level of risk.
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Report Compilation & Review
A clear written report is produced and reviewed for quality and clarity.
Standards & Guidance We Work To
Our Legionella Risk Assessments are carried out in alignment with recognised UK guidance, including:
ACoP L8
HSG 274
BS 8580-1
HTM 04-01 (where applicable)
We apply these standards proportionately, focusing on practical risk control rather than excessive or unnecessary recommendations.
Clear Actions, Not Confusion
Risk findings are prioritised to support decision-making.
Typically, this includes:
Clear identification of high, medium, and low-risk issues
Distinction between immediate actions and planned improvements
Practical guidance on what should be addressed first
This approach allows duty holders to allocate resources appropriately and demonstrate active risk management.
Audit-Ready Records
Each Legionella Risk Assessment includes:
A written Legionella Risk Assessment report
A detailed asset register
Photographic evidence supporting findings
Schematic drawings, where required
Clear, prioritised recommendations
Guidance on review dates and reassessment triggers
Documentation is designed to support audits, inspections, and internal reviews.
Who This Service Is For
This service is commonly used by:
Property & Block Managers
overseeing shared systems
Duty Holders
meeting legal responsibilities
Business Owners
protecting staff and visitors
Health & Safety Managers
controlling risk and documentation
Facilities Managers
managing complex water systems
Landlords
fulfilling duty of care obligations
How to Arrange a Legionella Risk Assessment
Initial Enquiry
Contact us to discuss your property and systems.
1
Scope Confirmation
We confirm site details and assessment requirements.
2
Site Attendance
A competent assessor carries out the assessment on site.
3
Report Delivery
A quality-checked report is issued for your records.