A breathable air safety system and method having a fill station are disclosed. In one aspect, a method of safety of a building structure is described. A prescribed pressure of an emergency support system is ensured to be maintained within a threshold range of the prescribed pressure by including a valve of the emergency support system to prevent leakage of breathable air from the emergency support system. A filling process of a breathable air apparatus is safeguarded by enclosing the breathable air apparatus in a secure chamber of a fill site of the emergency support system of the building structure. The prescribed pressure of the emergency support system is designated based on a municipality code that specifies a pressure rating of the breathable air apparatus. The prescribed pressure of the emergency support system is maintained such that a system pressure is compatible with the breathable air apparatus.