Privies and Outhouses
A privy or outhouse is a self-contained waterless toilet used for disposal of non-water carried human waste consisting of a shelter built above a pit in the ground into which human waste falls. If the pit has an earth bottom, this point should be at least three feet above saturated soil conditions. If this separation distance cannot be achieved in the location of the privy, then the pit should be liquid-tight, with the wastes periodically removed by someone who services septic tanks. The privy should be securely attached to the ground or to the tank used for the pit.
For more information about privies see Section 7 of the Manual for Septic System Professionals in Minnesota (.pdf)