Glossary
Stagnation
Water sitting still in a system instead of being regularly drawn off and replaced. Stagnant water loses any disinfectant residual and tends to drift into the warm temperatures Legionella favours, which is why turnover and flushing of little-used outlets matter.
Covered in depth
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"Stagnation, Legionella glossary." Legionella.io. https://legionella.io/glossary/stagnation/
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