Standard option requires hook-up to well or city water. House built-in water quality control system purifies the water to the potable quality. The sewage is managed through the city sewage system. Off-the grid option has three type of tanks: clear water, grey water, and black water. When the clear water tank is filled from any water source (a well, lake, stream, river, tap or special air-to-water generator), the purification system will render the water potable, 99.9% protected from virus and bacteria. Autonomous option also has an integrated black water tank with bioactive sewage purification system. Black water tank must be emptied from time to time. Digital recirculating shower system continuously purifies, recirculates and corrects your shower water to the ideal temperature and pressure.