Do you think people should be able to control their OWN property and body and NOT the body and property of others?
Not in absolute. I think people should be able to control their property to a reasonable extent, only limited by the rights of others and in accordance with laws made of the people, by the people, and for the people. This compromise of absolute freedom affords civility, order, and prosperity for all.
I meant the radioactive waste dumper is misusing OTHER PEOPLES property.
People care when they are incentivized to care or sometimes because they are nice people.
Your last question seems to be a misunderstanding of my meaning, refer to my first line in the post for clarification. You're welcome.
How is he misusing other people's property? By what authority is that claim enforcable to make him stop?
Who owns the river? He is upstream and claims to own the river, or at least his section of it. Radioactive waste is drifting down the stream from his property onto others, is it his fault they put there property downstream before he built his plant? What is his incentive to care? What right do the people have downstream to make him stop? How will they enforce it?
Face it, he is misusing his property and your position is that there should be no government to tell him he can't use his property the way he wants, the people downstream don't have that right either.
Now apply this to many scenarios. I claim private ownership of a watersource, say the great lakes. It's my property, so no water will be funneled to the SW, no swimming, no boating, no drinking, no irrigation, it is now just a dump site for my garbage company. Who has a right to say I am misusing my property? Afterall, I have absolute control over my property, right?