In order to dispel harmful rumor, Fukushima city government is selling bottled tapwater at conference or events held in the city. (100 yen for 500ml)
Fukushima City Waterworks Bureau has embarked on a PR safety. ‘Safe and delicious’ a bottle of tap water in Fukushima.
They started selling it in 2008, but renewed the label last year to appeal. Cs-134/137 and Iodine-131 are supposed to be lower than the detectable amount.
Fukushima city government states, they intend to emphasize the safety of the tapwater in Fukushima city and food by the bottled tapwater, but it takes time for you to have actual health problems. You can’t taste or feel whether the water contains radioactive material or not.
Also, their minimum detectable level of radioactive material changes everyday for some reason.
Cs-134 : 0.877Bq/Kg, Cs-137 : 0.891Bq/Kg, Iodine-131 : 0.715Bq/Kg on 1/30/2013
Cs-134 : 0.977Bq/Kg, Cs-137 : 1.01Bq/Kg, Iodine-131 : 0.938Bq/Kg on 1/31/2013
If they set the minimum detectable level slightly higher than the actual amount, they can always indicate it to be “Not Detectable”.
Additionally, they only measure Cs-134/137 and Iodine-131. Other nuclides such as Strontium-89/90 or Uranium are never measured. It is very difficult to conclude the tapwater is safe to drink.
Even now, reactor 1~3 keep emitting 10 million Bq of Cs-134/137 every single hour. No wonder it reaches the water source (Surikamigawa) as well. In Nihonmatsu city, radioactive soil from decontamination work is dumped beside the water source as well.