Babies in the public pool with diapers, what do you think?

A few days ago when the temps were above 100 deg. the pool at the apt. complex my Christian Brother lives at was crammed full. There were a few parents there with their children who had diapers under their swimwear. There was no kiddie pool so the parents waded in the water holding their youngsters or held onto them with floaties, etc. My thought was the kids are in diapers so they are not potty trained, what if they go and something escapes? If that happened would they have to empty and drain the pool, add tons more chlorine? Even if they did add tons more chlorine would you still use it? What do you think?