^ That's what we've done for End of Year parties... it's HOT in Texas in June... but after the first year, and us moms having to hunt down all those bits of plastic (we were at the park) we switched to water bombs... balls that absorb water, just put a 5g bucket of water at each end of the field and you can refill... then after just gather the balls... it's worked really well.
Littering was the only law I could come up with that maybe might make sense... but that was a stretch. I don't know where the bleach thing came in, if at all, but I couldn't figure out how that would be possible.
Didn't even think about the latex allergy thing... got a cousin with that, but usually washing the site helps, so seems like using a water balloon full of water would kinda defeat the purpose if that was the purpose.
Whole thing makes NO sense, unless you figure it was just a bunch of kids having fun on an uber hot day... like their parents... have done for years...