You've gotten a lot of common sense advice. Realistically speaking, I would talk to the EPA and others, do the water samples that Dan has suggested (maybe on a weekly basis WITH HIS KNOWLEDGE) then go ahead and enjoy your investment like Wood says. I would also make sure he and the proper authorities understood that I considered this a food source.
The physical violence thing that I seriously recommend stems from my idea that everyone expects someone else to take care of them and that lawyers are there to see that we get justice. Not so. I don't believe we would have near as many ENRON's, Gov't assisted scams, etc. if there was a pretty good bet that victims and voters were going to be lining up outside every perpetrators office with blood in their eye. I know it will rarely happen but if it did we would have more justice and less law.
