YOUNGSTERS are putting their lives at risk by swimming and jumping into the water at Sheffield reservoirs.
Yorkshire Water issued a warning after a number of incidents over the weekend at Langsett and Rivelin reservoirs.
Youths were twice spotted swimming in Langsett and children broke into the North Valve Tower at Rivelin Dam to jump into the reservoir.
And Yorkshire Water said the hot spell has also seen a number of people setting up illegal camps at the edge of water, with a number of tents erected at Broomhead reservoir over the weekend.
Yorkshire Water spokesman Matt Thompson said: “It’s a very stark message, but if you enter our reservoirs, for whatever reason, you may not come out alive.
“They may seem like a good place to take a swim or cool down but, in fact, this couldn’t be further from the truth.
“When fatalities occur - and they do across the UK each year - it’s often the temperature which is the most significant factor.
“Reservoirs are deep and the water doesn’t flow like in rivers or the sea so the temperatures rarely rise much above 12C.
“Strong currents also lurk beneath the surface of often calm looking waters as we draw water into our supply network.
“It really doesn’t matter how well you can swim as it’s the cold which paralyses your muscles, meaning the victim is unable to stay afloat and if help doesn’t arrive within seconds, they will drown.”
“So, please don’t put yourself in danger, please stay out of our reservoirs.”
Two years ago, in June 2010, 15-year-old schoolboy Phillip Law died while swimming in Manvers Lake, Wath-upon-Dearne, in the cold water.
The warning about entering its reservoirs has been issued as part of Yorkshire Water’s ‘Dying To Be Cool’ campaign.
n For more safety advice visit yorkshirewater.com/safety.