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Legionella Control

Legionella Control

Legionella Awareness Training

The Health & Safety Executive (HSE) often highlights a lack of competency amongst staff or insufficient Legionella training as contributing to individual & management failures in preventing and controlling Legionnaires’ disease outbreaks. 

HBI by UL Solutions deliver high-quality Legionella Awareness Training in the classroom setting that can be hosted at a client’s premises or our own offices. 

The half-day training is suitable for a wide range of individuals who may be involved in day-to-day Legionella control including:

Legionella Awareness Training
  • Duty Holders

  • Responsible Persons & Deputies

  • Estates and Facilities Officers

  • Buildings Managers

  • Engineers and Maintenance Personnel 

  • Plumbers

HBI by UL Solutions is registered for Training Services with the LCA. Membership of the LCA ensures that HBI by UL Solutions maintain appropriate management systems for Training Services associated with the control of Legionella as required by the LCA’s Code of Conduct.

A typical course outline for Legionella Awareness Training (for Hold & Cold Water Systems) is shown below:

  • What is Legionnaires’ Disease 

  • Introduction to Legionella Bacteria

  • Legionella Growth Factors

  • Legislation & Guidance (AcoP L8 & HSG274)

  • Hold & Cold Water Risk Systems

  • Introduction to Legionella Risk Assessment

  • Case Study: Barrow-in-Furness Outbreak

  • Written Schemes of Control

  • Monitoring & Logbooks

HBI by UL Solutions are also able to offer training solutions to organizations operating Evaporative Cooling Systems & Cooling Towers as well as providing refresher training and bespoke training options.

Legionella Awareness Training

Legionella Risk Assessment

Legionnaires’ disease is a potentially fatal form of pneumonia. People may get infected when they breathe in tiny water droplets (aerosols) or droplet nuclei (particles left after the water has evaporated), which are contaminated with elevated concentrations of legionella bacteria.


Legionella may via the mains water supply, colonise man made hot and cold water systems, cooling towers & evaporative cooling systems as well as spa pools or jacuzzis.  If these systems are poorly maintained or managed and conditions are favourable the bacteria may grow within these systems leading to an increased risk of Legionellosis (the collective term referring to the pneumonia like diseases’ caused by the bacteria).

Legionella Risk Assessment

Legionella bacteria grow best between temperatures of 20°C - 45°C with optimum growth temperature being 35°C - 40°C.  High temperatures (minimum 60°C) kill the bacteria. Legionella bacteria are found in low numbers in natural aquatic environments, for instance, lakes, rivers and ground water. As a result it is virtually impossible to prevent legionella bacteria entering man-made water systems.  In low numbers the bacteria are generally considered harmless. With the correct conditions, for example, warm water, the presence of micro-organisms and nutrients in the water or materials such as rust, the bacteria can grow and multiply to high levels which increase the risk of exposure. The bacteria tend to grow in biofilms (slime). Biofilms are likely to form on surfaces where there is low water flow or water is allowed to stagnate. The growth of the bacteria can however be controlled.

The first step to manage this risk is to assess the level of risk within your premises. The HSE’s publication HSG 274 Legionnaires’ disease Part 2: The control of legionella bacteria in hot and cold water systems states that:

Carrying out a legionella risk assessment and ensuring it remains up to date is required under health and safety law and is a key duty when managing the risk of exposure to legionella bacteria.

HBI by UL Solutions Legionella risk assessment services assist customers in controlling the risk of Legionnaires’ disease posed by water systems in their premises.   As market leaders in our industry, In 2012 HBI by UL Solutions became the first company in the world to gain UKAS accreditation for Legionella risk assessment. All HBI by UL Solutions personnel undertaking these services will be suitably trained and qualified to perform their tasks, complying with our accreditation to ISO/IEC 17020/2012 as an inspection body for Legionella risk assessment. 

HBI by UL Solutions services include:

  • UKAS accredited Legionella Risk Assessment

  • Provision of L8 compliant Water Logbooks

  • Water System Schematic Drawings

  • Microbial Sampling

Legionella Risk Assessment

Legionella Control Online offers customers a state-of-the-art solution for online leginoella control and is widely recognised as a market-leading tool throughout the water hygiene industry.


The system is webased and operates across a wide range of browsers and can accomodate all relevant legionella control documentation including:

  • Legionella Risk Assessments

  • Non-Compliant Remedial Actions

  • Written Schemes of Control

  • Monitoring Logbooks

  • Water System Schematics

  • Training Records

  • Sampling Results

Legionella Control Online

Mobile Monitoring App 

Routine temperature monitoring can be completed and sent to directly to Web-based logbooks on  using our Mobile Monitoring App- available currently for use on Android and iOS smartphones and tablets.  


HBI by UL Solutions innovative Mobile App simplifies the process of completing regular monintoring in building portfolios large or small and boasts a range of facilities:

  • Send and receive data by WIFI, 3G or 4G mobile reception

  • Offline functionality enables users to record and save data when out of connectivity

  • Barcode scanning facility with built in scanner or add-on bluetooth scanners

  • GPS tagging of where and when readings were taken

  • Automatically recognises and records non-compliant temperature readings, sending remedial actions to logbooks with readings

  • Sign-off exisiting non-compliances once readings return to specification

  • In-built calandar system allowing multiple operatives to monitor what is due

For a free demo of RecordsForBuildings click here

Legionella Control Online
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