Legionella control in dental clinics and surgeries
Six recurring Legionella mistakes in UK dental practices, from stagnant waterlines to fuzzy ownership, and the practical fixes that prove control.
Legionella control in dental clinics & surgeries
Dental practices and clinics have a specific and well-recognised Legionella concern: dental unit waterlines. The narrow-bore tubing that supplies handpieces, syringes and scalers runs warm, has very low flow and is prone to biofilm, creating ideal conditions for bacterial growth, and treatments produce a fine aerosol close to the patient's airway.
Alongside the waterlines, practices have the usual domestic hot and cold systems, hand-wash basins and outlets that may sit unused overnight, at weekends and during closures.
Good control combines manufacturer-recommended waterline disinfection and monitoring with a standard Legionella regime for the building's water systems. Because dental units need daily and weekly attention, and because practices must evidence their water management, disciplined record keeping matters. A digital logbook helps ensure routine flushing, disinfection and temperature checks are completed and documented consistently.
Checked against HSE ACoP L8, HSG274 and the BS standards on 27 June 2026.See what changed ›
What makes this setting different
- Dental unit waterlines run warm with very low flow
- Narrow tubing is prone to biofilm growth
- Treatments generate aerosol close to the patient's airway
- Outlets sit unused overnight, at weekends and during closures
- Daily and weekly waterline tasks must be evidenced
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Guidance for dental practices
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"Legionella control in dental clinics & surgeries." Legionella.io. https://legionella.io/for/dental/
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