Dental Practice Water Hygiene and Legionella Risk Assessments

Our Dental Practice Legionella Risk Assessments services are designed in line with the HSE Approved Code of Practice ACoP L8:2013 (Edition 4),

HSG274 Part 2 and 3, HTM0105 and HTM04-01.


The dutyholder (Practice Owner/ Practice Manager) must ensure that the person who carries out the risk assessment and provides advice on prevention and control of exposure to legionella must be competent to do so. Please note that all our consultants are members of “Water Management Society” and are trained to City and Guilds WH004 Standard.



All our dental practice legionella risk assessment services are completed in line with below listed regulations and guidelines:


Health and Safety at Work Act 1974.

Health Technical Memorandum HTM04-01

Health Technical Memorandum HTM01-05

Approved Code of Practice (ACoP L8) including HSG274 Part 1, 2, 3

Control of Substances Hazardous to Health (COSHH).

Water Supply (Water Fittings) Regulations 1999.

British Standard BS8580


Our consultant will always carry out an extensive Legionella risk assessment of all of the water services within your dental practice (including all dental equipment and DUWLs). Our Legionella Consultants are always aiming to provide the highest possible standard and achieve 100% customer satisfaction.


“Your Safety is Our Priority”



Our Water Hygiene & Legionella Risk Assessment will include


  • Summary of Overall Risk Rating

  • Site/Building Overview

  • Schematic Drawings

  • Risk Assessment Executive Summary and Risk Rating (Risk Conclusion)

  • Recommendations 

  • Risk Assessment Survey Data:

    • Management Overview

    • Dental Equipment (Dental Unit Water Lines)

    • Domestic Hot and Cold Water


  • Written Scheme/Monitoring Programme Evaluation

  • Photographic Evidence


Dental Unit Water Lines - Microbiological monitoring:


Did you know that:


HTM01-05 Paragraph 19.68 states that:


"All microbiological measurements should be by approved methods and/or be carried out by United Kingdom Accreditation Service (UKAS)-accredited laboratories.

Dip slides are not acceptable."


The First Principle can undertake on-site sampling of your water systems including dental unit water lines (DULWs) for Legionella and TVC (drinking water) using an independent UKAS Accredited Testing Laboratory. We will receive and interpret the laboratory test results and prepare recommendations for remedial action (including emergency reporting of elevated results).