Two years on from the catastrophic Fukushima nuclear reactor meltdown in Japan, Tepco is struggling to manage the ongoing problems involving radiation. Groundwater has been leaking into the basement of damaged reactor buildings at a rate of 75 gallons a day. The groundwater becomes tainted in the reactor buildings and needs to be stored to prevent radioactive isotopes entering the environment. Tepco has a small army of workers battling to keep the groundwater flooding under control. This video explains the storage operation for the tainted water.