My feelings as well. Article says registered Nurse and a Psych Technician were witth the children; and began CPR after the fact. This is just so heart-breaking. A precious child died because parents weren’t watching their children.
In my area, local pools do not permit such small children to be in the water without an adult even if the children are wearing a flotation device. A child has to demonstrate that he or she can swim the entire length of the pool smoothly, unassisted, before he is allowed to be in the pool without an adult RIGHT next to him. And there are regulations about how many lifeguards are to be up in the chairs for how many pool patrons. No small child is allowed in the deep end.
Kids slip under the water and drown silently, without splashing or fighting. You have to watch them like a hawk.