BS 8580 was first published in 2010 and provided a guide to risk assessments performed with the intention to identify and manage risks associated with Legionnaires disease.

The standard has been renamed (from BS 8580 to BS 8580–1) and revised to align it with the HSE ACoP L8 (4th edition) (Approval code of Practice) and associated guidance documents such as HSG 274 (Legionnaires’ disease – Technical guidance) which were revised in 2014.

The revision also takes into account HSG 282 — Control of legionella and other infectious agents in spa-pools – a system that was published in January 2017. There was also a need to update references within the standard.