SWELTERING Bradford residents have been advised not to be tempted to swim in the district's reservoirs during the current hot spell.
Yorkshire Water has joined forces with the police and fire service to warn of the dangers and spread the safety message.
Neil Dewis, head of operations at Yorkshire Water, said: "Despite the hot weather we would like to ask people across the region to stay out of our reservoirs. They may look inviting but the temperatures and currents within them can be deadly and we’d hate to have another tragedy on one of our sites this year."
Ian Thompson, a technical rescue officer with West Yorkshire fire service, said: "Too often in the past people have been drawn to the cooling waters on a hot day, only to find that they are simply not capable of functioning in the low temperatures encountered in the deeper water.
"Often this results in a call to the emergency services and in some instances with a fatal outcome."