All premises where cooling towers and evaporative condensers are situated must register with the Council under The Notification of Cooling Towers and Evaporative Condensers Regulations 1992 (external link).
Such items of equipment are called 'Notifiable Devices', which includes all cooling towers and evaporative condensers, except when they contain water that is not exposed to the air and the water and electricity supply are not connected.
The main purpose of registration is to identify potential areas that could give rise to the spread of infectious disease (such as legionella) and to ensure preventative measures are taken to eliminate the risk of such infection arising to employees and the public. If a tower or other similar equipment becomes redundant and is decommissioned or dismantled, this should also be notified to the Council.
Even if the premises is enforced by the Health and Safety Executive (HSE), you must still notify the Council.
All companies need to provide to us with details of where the notifiable plant is located, the person in control of those premises, the number of devices at the premises and their approximate location.