Because of the time period, it wouldn't surprise me that the vault was built/donated by a company building air raid shelters to survive the Nuclear Holocaust that was imminent. In the early 80s a friend had a shop locally and there was a bomb shelter in tha back part of the lot, it too had leaked water through it's ground bordered structure. Well it's good to know that if we had ever needed them we would have had plenty of water, the radioactivity would have given some interesting lighting,LOL.
