Legionella control in office buildings
In a hybrid office the risk isn't the plant room. It's the half-empty floor, the cyclists' shower and the capped pipe nobody owns. Here's what to fix first.
Legionella control in office buildings
Office buildings are often seen as low risk, and many are, but that perception is exactly where problems start. Modern working patterns mean desks, kitchenettes, toilets and shower facilities can go unused for days at a time, and hybrid working has made stagnation a year-round issue rather than just a holiday one. The COVID-19 period showed how quickly water quality can deteriorate in buildings that empty out.
Many offices also have water coolers, bottle-filling stations and occasional-use showers that need to be included in the assessment rather than overlooked.
The duty to manage Legionella applies regardless of how low the perceived risk is. A proportionate programme means a suitable risk assessment, sensible temperature checks, flushing of little-used outlets, and keeping clear records. A digital logbook makes it straightforward to prove that routine tasks are actually happening across the building.
Checked against HSE ACoP L8, HSG274 and the BS standards on 27 June 2026.See what changed ›
What makes this setting different
- Hybrid working leaves outlets unused for days at a time
- Stagnation is now a year-round rather than seasonal issue
- Water coolers and bottle-fillers are easily overlooked
- Low perceived risk leads to complacency and missed tasks
- Occasional-use showers generate aerosols
Do this next
Common failures to avoid
Guidance for offices
Neglected water systems: the danger of stagnation
Dead legs, idle showers and warming cold water are where stagnation hides. A fault-finding routine to trace water stagnation risk to its source and fix it.
Lockdown lessons: water stagnation during COVID-19
When lockdown emptied UK buildings, the water sat still. Here's how to plan for dormancy and make reopening the safe moment, not the dangerous one.
Flushing little-used outlets: best practices
How to flush little-used taps and showers properly: which outlets to list, how to purge them without spraying aerosol, and how to prove it was done.
Are water coolers and bottle-filling stations a Legionella risk?
Do office water coolers and bottle-filling stations carry a Legionella risk, and do they need testing or flushing? A clear, practical answer for duty holders.
Setting up a digital Legionella logbook
How to set up a digital Legionella logbook so the audit trail holds up: asset structure, what each task records, permissions and a clean switch from paper.
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"Legionella control in office buildings." Legionella.io. https://legionella.io/for/offices/
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