To provide purification healthy water easily detoxifying radioactive contamination at a low cost.

Purification healthy water detoxifying radioactive contamination is produced through a first process of passing raw water including radioactive contaminants through an active carbon granule layer first and a second process of passing processed water obtained through the first process through a porous calcium compound granule layer. Purification healthy water, detoxifying radioactive contamination, which does not absorb radioactive iodine into the human body is produced further through an iodine-containing granule layer. A porous calcium compound may be a calcined product of selected one or more of coral, coral fossil, or Ryukyu lime stones, or coral, coral fossil, Ryukyu lime stones, shells, or eggshells. Alternatively, purification healthy water detoxifying radioactive contamination is produced by passing the raw water through a Ryukyu lime stone granule layer including seaweed ashes obtained by burning a mixture of Ryukyu lime stones and seaweed at 300-1,100.