UK legionella regulations and guidance

The legal framework for legionella control in UK water systems. Each guide explains what the regulation or document does, who it applies to, and what you need to do to comply.

HSG274

2014

HSG274 is the technical companion to ACOP L8. Where ACOP L8 sets out what must be done, HSG274 explains how to do it. It is published by HSE in three parts covering different syste...

ACOP L8

2013

ACOP L8 is the Approved Code of Practice published by HSE that sets the benchmark standard for legionella control in UK water systems. It is not itself law, but following it is tre...

LCA

1999

The Legionella Control Association is the UK trade body for water hygiene service providers. Its registration scheme is not a legal requirement, but it is the de facto competence s...

HSWA 1974

1974

The Health and Safety at Work etc. Act 1974 is the foundation of all UK workplace health and safety law. For legionella, it is the Act that creates the duty to assess and control t...

Important This page is general guidance only. Legionella risk varies with the specific water system, its use, and the people exposed to it. You should consult a competent legionella risk assessor for advice on your premises. LegionellaCheck is an independent information service and is not affiliated with HSE, UKAS, the Legionella Control Association, or any water hygiene company. This site does not provide medical advice. If you suspect Legionnaires' disease, contact NHS 111 or your GP.