How is competence checked after legionella training?

Competence after legionella training is established by checking whether the learner can carry out their assigned water-safety responsibilities to the required standard, rather than simply confirming attendance. The assessment should reflect the person’s role, the type of water system involved and the level of responsibility they hold.

A suitable review considers whether the learner can:

• Explain the purpose of the control measures relevant to their duties.
• Recognise conditions that could increase the risk of legionella growth and spread.
• Follow the organisation’s written procedures and escalation routes.
• Complete monitoring records accurately and identify unusual results.
• Take appropriate action when a control measure has not been completed or is outside the specified requirement.
• Understand when a matter must be referred to a responsible person, competent adviser or specialist contractor.

For people involved in routine monitoring, assessment may include reviewing how they would check temperatures, carry out flushing, inspect outlets or record observations. For those with wider management responsibilities, it may focus more on interpreting monitoring information, reviewing control schemes, responding to failures and ensuring that corrective actions are properly followed through. The assessment should therefore match the duties the learner is expected to perform, rather than applying the same test to every role.

Evidence of competence can include completed assessment papers, assessor notes, observed task records, marked exercises and confirmation that any identified gaps have been addressed. A result should be recorded clearly, including the date, the subject covered, the learner’s role and any restrictions or further actions. Where a learner does not demonstrate the required standard, additional instruction, supervised practice or a later reassessment may be appropriate.

A training certificate normally shows that a person attended or completed a course. It should not be treated on its own as proof that the person remains competent to manage every task associated with legionella control. Employers should also consider how the individual performs in the workplace, whether procedures have changed and whether their responsibilities have expanded since the course was completed.

Ongoing checks are particularly important where duties involve taking measurements, maintaining records, carrying out remedial actions or making decisions about escalation. Supervisors can review records, observe work and discuss unusual findings with the person responsible for the system. These checks help identify when further guidance or refresher training is needed and provide evidence that competence is being maintained as part of the organisation’s wider water safety arrangements.