Don't at least the parents of the kid that drowned in your pool while trespassing on your land get at least a charge of "criminal negligence" against them? IANAL, but aren't kid's <14 supposed to be supervised at all times by an adult? And 14+ years old that drowns in a pool for inability to swim is also something that should be blamable on the parents, not the pool owner.
Edit with clarifications after comments: I meant, parent's should be supervising their young kids, or take the risk/blame, if something happens to the kids while they aren't.
(I roamed 'unsupervised' in fields and forest at young age with friends, and enjoyed it. But I was also taught to look where I step, and how to swim)