People are still putting their lives in danger by swimming in reservoirs.
That’s the message from Yorkshire Water, which operates 120 reservoirs across the region.
Officials report more incidents with people taking a dip in reservoirs as the heatwave continues.
Wardens at numerous reservoirs had to ask people to get out of the water at the weekend, and the water company is keen to highlight the dangers of taking a dip during the hot spell.
There have been incidents at moorland reservoirs like Digley at Holmfirth.
Reservoirs may seem like a good place to take a swim to cool down but they are extremely dangerous due to the chilling temperatures and strong under currents beneath the surface.
They are deep and do not flow like in rivers or the sea. As a result the temperature rarely rises much above 12C.
Strong currents lurk beneath the surface as water is drawn into the supply network.
Geoff Lomas, Yorkshire Water’s recreation and catchment manager, said:
“It really doesn't matter how well you can swim as it’s the cold which can kill you.
“ The first sign of trouble is hyperventilation but, if the swimmer stays in the water, the body will gradually shut down to protect the vital organs and muscles will go into cramp.
“The victim will be unable to remain afloat and will sink below the surface and, if help doesn't arrive within seconds, they will drown.”
Even if the alarm is raised quickly, it can be minutes before emergency services arrive .”
