In 1977, the Centers for Disease Control and Prevention (CDC) identified a condition known as Legionella pneumophila, which is a waterborne disease responsible for 34 deaths at an American Legion convention in Philadelphia. This interactive online course presents the causes and risk factors for Legionella contamination and some of the problems associated with Legionella in water systems in commercial buildings. Other topics include the ANSI/ASHRAE 188-2015 Standard and testing methodology and frequency.

• Define Legionella, causes of Legionella contamination, and risk factors associated with Legionella contamination
• Identify key elements of the ANSI/ASHRAE 188 standard
• Assess water management protocols for buildings to prevent outbreaks
• Describe Legionella testing methodology and frequency