Duties under the H&S at Work Act 1974 and COSHH extend to risks from legionella arising from work activities. Under these Regulations risk assessments and the adoption of appropriate precautions are required.

In January 1992 a guideline document from the H&S Commission, namely THE APPROVED CODE OF PRACTICE - The prevention and control of legionellosis (including legionnaires' disease) was introduced:

Key requirements ...