I'm not sure whether IABU or not! We've just been to a localish public swimming pool for a 'fun swim' (whose fun I'm not sure!). Whilst the DC appeared to enjoy it, I had to go in because one of mine is under 8.
I couldn't believe the amount of 'stuff' floating in the water. It made me feel physically sick as I kept fishing bits (and not small bits either) out of the water and putting them on the side. I certainly wouldn't want to do a 'proper' swim in there in that state.
Is this usual for a summer holiday or should I tell them?