Legionella risk assessments are essential for maintaining regulatory compliance and protecting public health. WCS Group provides expert assessments to help businesses identify, manage, and mitigate Legionella risks in their water systems. Our in-depth approach ensures your facilities meet ACOP L8, HSG274, and BS 8580-1:2019 standards.
With WCS Group, you get:
A Legionella risk assessment is a crucial process for identifying and controlling the presence of Legionella bacteria in water systems. It ensures businesses comply with UK regulations while safeguarding public health and operational efficiency.
A thorough risk assessment is the foundation of an effective Legionella control strategy, keeping your business compliant and your water systems safe.

A Legionella Risk Assessment involves a comprehensive process that includes both a review of existing records and a physical inspection.
The first step is to review your current records and assess previous risk assessments to ensure that all recommended remedial work or maintenance has been completed.
The second step involves a site tour, focusing on areas where water is stored or where there is potential for aerosol generation. During this phase, consultations will take place with key personnel responsible for controlling Legionella, and management procedures and paperwork will be verified.
Following the assessment, a detailed report will be provided, outlining any recommendations to reduce or mitigate Legionella risks.
1. Assessing the risk level of the people in the building: is there anyone on site who is particularly susceptible due to age or health considerations?
2. Describing both cold water and hot water systems: are they mains fed, from water storage, or a combination of the two or maybe something different?
3. Recording water outlet temperature: water services must be operated at temperatures that inhibit Legionella growth. (This means below 20°C at outlets and where water is stored in cold water systems and above 50°C at the for hot water outlets unless there is a supplementary strategy, such as secondary disinfection in place.)
4. Assessing the cold and hot water systems: is the cold water tank accessible, insulated, and tightly covered to prevent vermin or foreign matter from entering?
5. Assessing the hot water system: what type of system is it (unvented cylinder, combi-boiler, cylinder fed, etc.), and are the distribution pipes adequately insulated?
6. Identifying additional areas of risk: are showers and mixing valves correctly installed and well maintained? Are there any dead legs, redundant, or rarely used pipework on the property that will need to be removed or altered? If areas of the property are left unattended for periods of time, is there a schedule in place to regularly flush water systems?
All remedial works need to be recorded in a logbook and followed up with periodic checks and maintenance.
WCS Group offers a comprehensive suite of services to help businesses stay compliant and ensure water safety. Explore our full range of Legionella compliance services designed to safeguard your water systems:
Regular water testing to detect Legionella bacteria and ensure your systems are safe and compliant.
Tailored solutions to disinfect and treat your water systems, eliminating potential risks and ensuring long-term safety.
Ongoing monitoring services to track system performance and detect early signs of Legionella contamination.
Comprehensive audits to assess your current Legionella control measures and recommend improvements to meet regulatory standards.
Expertise & Compliance
We provide HSG274 Part 2 compliance and adherence to ACoP L8, ensuring your business meets all UK/EU regulations.
Nationwide Coverage, Local Service
With over 800 dedicated specialists, we serve every UK and Ireland postcode, delivering tailored, on-the-ground support.
Customised Solutions
Our assessments are designed to fit your specific needs, ensuring the most effective Legionella risk management for your business.
Tech-Enabled Monitoring
We offer advanced monitoring tools and software as a service, giving you real-time visibility and actionable insights to reduce risk.
Proven Track Record
With a history of successful assessments across various industries, including healthcare, food & beverage, hospitality, and commercial buildings, we’re known for delivering outstanding service and system improvements.
Clear Communication
We simplify complex water risk management, providing clear, concise advice without unnecessary complexity or drama.
National Reach
Our teams cover water engineering, wastewater, and waste-to-energy, ensuring your business benefits from specialist, local service no matter your location.
With WCS Group, you’re not just meeting compliance requirements—you’re taking proactive steps to protect public health and optimise system performance.
Ensure your business is compliant with industry regulations and protect public health with WCS Group’s expert Legionella risk assessments.
Our specialist team offers thorough evaluations, ongoing monitoring, and tailored solutions to safeguard your water systems and reduce the risk of Legionella outbreaks.
Get in touch now to book a consultation and take the first step toward comprehensive water safety.