We've been going to this centre since our little g...

We've been going to this centre since our little girl was in 3year old kinder which was when she started lessons, she's just now turned 7. While swimming with her little friend from school I was told that because they were under the age of 10, I had to supervise in a more pro-active manner (walk around the pool within metres of the girls while they were swimming or if they used the slide area I had to be there also). I've seen some children swim better than their parents but, anyway..Never have I been told this and if it was policy, new or not, why didn't the people in reception inform me! And, isn't that why the lifesavers are there?!