Supporting documents: new provider registration applications

Page last updated: 27 April 2026

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Legionella risk assessment

Services that need to send this document with their application:

Why we want to see this evidence

A Legionella risk assessment is a legal requirement. It shows you have identified and are managing the risk of legionella bacteria in your water systems.

Legionella can cause Legionnaires' disease, a serious form of pneumonia. It is particularly dangerous for elderly people and those with weakened immune systems.

We assess this under Regulation 12: Safe care and treatment and Regulation 15: Premises and equipment.

Even if you do not manage or own your premises, you are still responsible for legionella control.

Before you apply to register with us, you must:

  • assign someone to be responsible for legionella control at your service.
  • complete any actions identified by your risk assessment.

What to include

Provide a copy of your current Legionella risk assessment, this should cover:

Water system identification

We want to see mapping of your:

  • hot and cold water systems
  • showers, taps and sinks
  • water tanks and cylinders
  • thermostatic mixing valves
  • appliances using water, such as washing machines and dishwashers

Identification of risk factors

You should identify any issues with:

  • areas of stagnant water or low usage
  • inadequate water temperatures
  • corroded or scaled pipes
  • dead legs or redundant pipework

Inspection and testing

We want to see evidence of:

  • temperature checks at outlets
  • water sampling, if required
  • visual inspection of tanks and pipework
  • showerhead and tap descaling schedules

Control measures

Tell us about your:

  • regular flushing of infrequently used outlets
  • temperature control and monitoring
  • cleaning and disinfecting of showerheads and taps
  • maintenance of water tanks and pipework
  • use of approved fittings

Record keeping

Include your:

  • risk assessment report
  • maintenance logs
  • temperature monitoring records
  • cleaning and disinfection schedules
  • action plans for any remedial work

Review schedule

We expect to see that you carry out an annual review, or sooner if:

  • there are changes to the water system
  • new residents move in
  • building alterations occur
  • a case of Legionnaires' disease is suspected

Staff training

We want to see evidence that staff are:

  • trained to recognise risks
  • able to carry out basic checks
  • know how to report issues promptly

Related regulations