I have a question regarding building a detached garage over an existing well water supply line. Our town's zoning regulations regarding setbacks, etc. are such that about the only place we can practically place a new detached garage is on top of the area where the well water supply pipe is currently running between the well and the house. Is it even permissible to do this in NY State, and if so, how we can find out exactly where and how deep the water supply line is? Also, any suggestions regarding type of foundation - slab, or block perimeter?