Managing Legionella in domestic water (potable plumbing) systems demands a strategic, data-driven approach to address risks while avoiding unnecessary expenses or ineffective interventions. To effectively reduce Legionella risk, facilities should follow structured Legionella risk management strategies based on comprehensive data analysis.
Upon detecting Legionella, prioritize actions to minimize health risks and ensure regulatory compliance. Immediate measures may include short-term disinfection, imposing water restrictions, and installing filters with <0.2-micron pore sizes on high-use points like faucets and showers. Emergency steps are intended as immediate, protective responses, forming a key component of Legionella risk management strategies.
Even if no Legionella was detected, review the sampling process to confirm it captures a comprehensive picture of the system. A limited sampling strategy can lead to undetected risks, so ensure all significant points, such as entry and high-use locations, are tested to validate system safety accurately. Comprehensive sampling is critical to effective Legionella risk management strategies.
If Legionella is identified in water samples taken at the facility’s point of entry, alert the water utility to evaluate any potential contamination sources within the supply. This step is essential, as external contamination sources can affect the broader water supply.
Even when Legionella levels meet acceptable thresholds, certain equipment may still require targeted actions. Prioritize specific systems and devices, including:
Addressing specific points within the system prevents localized issues without necessitating system-wide disinfection. Tailored remediation supports comprehensive Legionella risk management strategies.
Construction activities, including system modifications and temporary shutdowns, can disrupt water systems and introduce Legionella. Reviewing and updating water management procedures during construction helps mitigate risks associated with new piping, stagnant water, or shifts in flow patterns.
Ben Frieders is the Business Development and Marketing Manager at ChemREADY, an industrial water treatment company, where he focuses on driving growth through strategic marketing, business development, and acquisitions. A former U.S. Navy Chief Petty Officer with a background in nuclear operations, Ben brings a unique blend of technical expertise and leadership to the water treatment industry. Certified in ASSE 12080 Legionella Water Safety and Management, he is a recognized expert in water quality standards, regulatory compliance, and Legionella risk management. Passionate about scaling businesses and optimizing systems, Ben combines data-driven strategies with a hands-on approach to help organizations achieve sustainable growth.
