Hello all, I am in the process of designing a home to be built on my lot next year. I am looking at options for a storm/bomb shelter to be built below grade. Because of the dual usage I plan on installing air filtration (NBC), blast doors, blast and overpressure valves,etc... My question is this: besides a 5-gallon bucket with a toilet seat, can I have a regular toilet installed? Keep in mind that the water table is very low and drainage may need a special solution. Also, would I have to worry about some sort of blast valves on venting and drains? Anyone have any experience in this department?