ASHRAE's Proposed Legionella Standard
What is the purpose of the proposed Legionella standard?
To provide guidance to prevent Legionellosis (Legionnaire's disease and
Pontiac fever) associated with building water systems.
Who could be affected?
Anyone who owns, designs, builds, installs (including commissioning), manages, operates, maintains and services centralized industrial or commercial building waters systems.
How could it impact you?
If and when the proposed ASHRAE Legionella standard is approved, you could be responsible for safeguarding potable and utility water systems. Both existing and new buildings would be incldued:
• Human-occupied buildings
• Potable water systems; cooling towers and evaporative condensers; whirlpool spas; decorative fountains and other water features; and aerosol generating air coolers, humidifiers and washers.
What is HACCP?
Hazard Analysis Critical Control Point is an established risk management approach suggested in the proposed ASHRAE standard. Facility owners and managers need to assess risk using HACCP principles.
How would you conduct a HACCP plan?
• Conduct a hazard analysis (Legionella)
• Identify control points, determine critical control points, and establish
• Keep records and validate and verfiy your plan
• Establish monitoring procedures and corrective actions and verify the hazard (Legionella) is controlled
Treatment methods for Legionella
Some methods of disinfection often fail to control Legionella. That's why it's important for you to obtain competent advice and review current publications for Legionella control. To read our research publications, please visit www.legionella.org.