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Legionella Risk Mitigation: Reopening Schools and Offices Safely

Updated: Apr 19, 2023

As schools and workspaces re-open after months of being minimally or completely unoccupied, it is critical to take steps to minimize Legionella risk.

Stagnant water in piping systems or open tanks can increase the risk Legionella and other water-born bacterial growth.

To minimize the risk, flushing the building water systems, cleaning tanks/fountains, and ensuring cooling towers are cleaned/treated are a few common steps to take before re-occupying the space. Each building should be evaluated individually to ensure all potential sources are being considered.

Written by:

Matthew Merli, PE, LEED AP

Principal, Academic & Science Market Leader


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