I found something out the hard way and would like to pass on this warning to any future home buyers. From my understanding Indiana law (and many other states as well) does NOT require home sellers or home builders to disclose that their properties are adjacent to a EPA Superfund site.

So that lovely property that no one seems to have snatched up behind your new build, might actually be a 15 year old toxic dump.
Please inform yourself before purchasing. Info on Superfund sites can be obtained at the EPA website.
Buyer beware!