Alternatively, building on land that slopes down away from the sewer connection point - if I have a toilet that's too low and can't gravity feed the wastewater towards the sewer point for that land, what happens in this situation? I called Sydney Water and they said I would need to install a pump, which sounds fine enough, but want to check with people here. Any issues from council either? Anyone with experience with a poo pump? Do they give much maintenance grief?