Campaigning mum Beckie Ramsay has joined forces with water company United Utilities in a bid to save lives.
She has recorded an interview about the loss of her son Dylan, 13, as part of a reservoir safety information pack for schools.
It coincides with Drowning Prevention Week, which started on Saturday.
Dylan died when he got into difficulties in a quarry in Whittle-le-Woods in 2011.
Beckie now works to teach young people about the dangers of swimming outdoors.
Beckie, of Church Hill, Whittle-le-Woods, said: “It was hard doing the interview for the film, it always will be. But if hearing about Dylan’s death means that one less young person will be tempted to go into the water this summer, then it’s worth it.
“I’m pleased the film is going to be used as a teaching aid as part of this pack. People need to be aware of the danger.”
Schools or community groups can download the water safety resource pack from www.unitedutilities.com/reservoir-safety.