Legionella Cold Water Risk Assessment & Disinfection Course

Legionella Cold Water Risk Assessment & Disinfection Course

APHC, your plumbers association brings to you the plumbing and heating engineer a specific training course focusing on meeting the training requirements of the “Approved Code of Practice (ACOP): Legionnaires’ disease: The control of Legionella bacteria in water systems” and the technical guidance HSG274 Part 2: The control of legionella in hot and cold water systems (HSG274).


Legionella bacteria can survive and multiply in hot and cold water system pipework, calorifiers and cold water storage cisterns. The bacteria is dispersed in small water droplets known as aerosols created when water impacts a hard surface, such as those created by taps and showers.

If susceptible people breathe in these aerosols, they may contract Legionnaires’ disease or one of the other forms of Legionellosis which is caused by Legionella bacteria.

A well maintained water systems that has a high throughput, relatively low volume and which consistently achieves sufficient water temperatures are less likely to reach dangerous conditions. However, as a plumbing and heating engineer you still have to carry out a risk assessment of these systems to identify and assess potential sources of bacteria growth and exposure. This should be followed by a course of action to prevent or control the risks identified.

Course content

  • Give a comprehensive overview of the main legislative and guidance documents relative to the control of Legionnaires’ disease and the disinfection of water systems
  • Briefly describe the basic properties of water
  • Explain what is meant by the term Legionellosis, Legionnaires’ disease and Legionella bacteria
  • The background to the disease
  • What is the cause of the disease and how it is transmitted
  • Sources of the bacteria
  • How to manage and control the risk of Legionellosis
  • Provide information on how to carry out the cleaning and disinfection of cold and hot water systems
  • Explain the basic cold and hot water design principles and risks associated with Legionella
  • Provide practical guidance on how to carry out a risk assessment of a cold and hot water system in a building and make recommendations to rectify the problems
  • Give guidance on how to collect, transport and submit water samples to be analysed for Legionella bacteria

Course requirements

Plumbing and heating engineers attending this course will ideally hold a relevant NVQ Level 2 or equivalent practical experience of the plumbing and the water industry. Failure to provide evidence of this may result in a conditional certificate being issued.

Course Details


5 February
8 April
3 June
5 August
7 October


APHC Members £200 per person
Non-Members £250 per person
Includes training, refreshments and lunch


APHC Ltd offices at Unit 12 The Pavilions, Cranmore Drive, Shirley, Solihull B90 4SB.

Important Information

Successfully completing this course alongside a full plumbing qualification meets one of the criteria to join the PHCA Legionella, Risk Assessment & Disinfection Scheme which is open to APHC members in addition to their APHC’s licensed membership or certification scheme membership. It only costs an extra £100 (plus VAT) to join the scheme so why not call our sales team today on 0121 711 5030 to find out more.