This dataset comprises point data providing the locations of Cooling Towers within Dacorum. The Notification of Cooling Towers and Evaporative Condensers Regulations (1992) came into force on 2nd November 1992.The regulations require that local authorities are notified of any premises (Health and Safety Executive or local authority enforced) containing cooling towers or evaporative condensers. Dacorum Borough Council record the information provided by the person in control of the premises in a register. This is to help the Council and the Health Protection Agency investigate community outbreaks of legionnaire's disease which have been linked to installations such as cooling towers and evaporative condensers. The information on the location of these 'notifiable devices' is particularly valuable in the early stages of an investigation into an outbreak of disease where speed could be important in minimising the number of people affected by the disease.