Safety is a subject that is raised regularly and for which a number of different "passive" solutions have been designed. A safety system may be efficient, but the active surveillance of a responsible adult is the best way to ensure the pool is a real pleasure. It is also essential to teach children to understand the implications of the pool so that it is a continuing source of delight for them. Don't forget: The child who is at risk is generally one who are visiting and not used to the house and pool and who is therefore quite unaware of the danger of water. Most often they are aged between 2 and 5 years old.