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Legionella test kits for Dentists

Danger Areas

In most cases a Dental practice is no different from a small office, it comprises relatively simple hot and cold water services. They do, however, have a water system specific to their profession, namely dental water lines. These produce the spray (& aerosol) used to flush during treatment procedures.

Most dentists use a closed system for the dental lines which utilise distilled water and these lines are normally flushed each morning prior to opening of surgery. Additional flushing between patients is recommended.

Failure to keep dental lines clean allows a biofilm to form which permits bacterial growth. In rare circumstances, legionella have been found in dental lines which then is a high risk due to the aerosol being generated.

Many dentists are being requested by the CQC to check their dental water lines for legionella bacteria.


  • Management of Health & Safety at Work Regulations 1999
  • Control of Substances Hazardous to Health Regulations 1999
  • Health & Safety at Work Act 1974
  • Health and Social Care Act 2008 (Regulated Activities) Regulations 2010


HSG274 Legionnaires’ disease: Technical guidance:-

  • Part 2: The control of legionella bacteria in hot & cold water systems
  • Part 3: The control of legionella bacteria in other risk systems

Health Technical Memorandum 04-01: The control of Legionella, hygiene, “safe” hot water, cold water and drinking water systems (HTM 04-01).
Health Technical Memorandum 01-05: Decontamination in Primary Care Dental Practices (HTM01-05)

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