There is a well-established understanding of this in some realms. In oil and gas exploration, for example, they are very careful to seal off their well holes so that they don't create a hydrologic connection between two layers. So that understanding, I think, is there.
There is actually a legal framework, and people follow it all the time. I guess the limitation would be whether you understand what you're going through when you drill these holes and whether you inadvertently create connections between places. But I think we do have an understanding of how they could connect so that we can prevent them from connecting. Lack of knowledge means that sometimes you do your best and you still make a mistake. That's the philosophy on this.