This lecture aims to provide a summary of key aspects of control of Legionella in water systems and DUWL's within Dental Practices. Summarising the background and health risks we will explore the hazards and look to understanding the actions required to manage and mitigate them.

• Summarise the background and history of Legionella in water systems. ​
• Understand the health risks.​
• Define the hasards in water systems.​
• Understand the legal framework surrounding the control of Legionella .