On Mar 4, 5:59*pm, Molly Brown wrote:
I saw what looked like a septic tank cover right next to this very
expensive house built on a slab foundation. The house is on a hill and
the ground falls off right after where this cover is so the only place
the septic tank could possibly be, I would assume, is under the house.
Is this possible?

If it didn't have a basement, and if there are water issues, there
may
be a French Drain with a pump access in a chamber.