Dental Unit Water Line


The Health & Safety Commission’s Control of Legionella bacteria in water systems – Approved Code of Practice and Guidance’ (L8) issued in 2001 states that ‘a reasonably foreseeable risk of exposure to Legionella bacteria exists in any system containing water that is likely to exceed 20°C and produces a spray or aerosol during operation or when being maintained’.

Legionella invasion is typically due  to the fact that mains water can often contain trace levels of Legionella which can multiply in the water system fed by the particular mains water.

However, treatment of mains water by distillation or reverse osmosis (R.O.) is an effective Legionella-invasion prevention method, as bacteria will not pass over with the steam (in distillation) nor will they pass through an R.O. membrane.  Needless  to say careful operation of either treatment method is required to avoid contamination.  In addition, since the chlorine (disinfectant) originally present in the mains water is lost by both these treatment processes it is necessary to be especially rigorous in maintaining the cleanliness of containers holding water treated in this way.

The products listed below can help minimise the risk of Legionella proliferation in your surgery, Click on the image of each product from more information.


   Risk Assessment   Legionella Analysis  Dipslides        Sterisil Straw            DUWL Kit   

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Aerobic Bacteria Dipslides (Box of 10) Legionella Risk Assessment  - Electronic Protein Residue Test (Pk 50) Legionella Analysis CleanCert+ Biofilm Cleaner Sterisil Straw

Latest NewsLatest news & blog from DPWM Ltd...

  • New Redesigned ProductsPosted: 11th November 2016
  • First reported case of dental water line legionnaires disease confirmedPosted: 12th January 2013
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Address: DPWM Ltd, The Garth, Matlock Road, Walton, Chesterfield, Derbyshire, S42 7LD.

TEL: 01246 769439