Relief workers continued to distribute bottled water to families in Tokyo Thursday after officials discovered that radioactive iodine in the city's tap water has reached levels unsafe for babies.
Families with infants have received three bottles of water for each baby.
New tests show radioactive levels in Tokyo are now safe nearly two weeks after a devastating earthquake and tsunami, but still high in surrounding areas.
See a special AP Interactive on the problems at the nuclear facility.
City officials pleaded with people not to hoard bottled water because it's needed for victims in the quake zone. Some 660,000 households in northeast Japan still do not have water.
An estimated 18,000 people have been killed in the disaster and hundreds of thousands have been left homeless.
Meanwhile, workers are back inside the damaged Fukushima Dai-ichi nuclear plant, 140 miles northeast of Tokyo, after black smoke forced an evacuation.
On Thursday, two workers at the plant were being treated at a hospital after stepping into contaminated water while laying electrical cables in one unit, nuclear and government officials said.
The two workers likely suffered "beta ray burns," said officials at plant owner Tokyo Electric Power Co, citing doctors. They tested at radiation levels between 170 to 180 millisieverts, well below the maximum 250 millisieverts allowed for workers, said Fumio Matsuda, a spokesman for the Nuclear and Industry Safety.
More than two dozen people have been injured trying to bring the plant under control.