Many composting toilet systems must be positioned below the floor underneath the toilet or in a separate building. If you use a waterless toilet, the composting toilet system must be positioned directly beneath the toilet. It can be a few floors down, but there should be no angles in the toilet chute. Remember: “chute straight”. Your composting toilet system does not have to be in the basement. Laundry and utility rooms are also potential locations. If you have no basement or sufficient crawl space, your most likely options are to install a vacuum-flush toilet system or to use a self-contained composter. (again, if you do not want to manage this, call a professional.)