The levels of radioactive elements in tap water at Tokyo water purification plants have been detected to be safe for infants' consumption.
The levels continued to drop after samples were detected to be within the normal range for consumption on Saturday.
Thirty-four becquerels of radioactive iodine have been detected in per kilogram of sample water this morning at the Kanamachi facility in the capital's Katsushika Ward and 48 becquerels at the Asaka plant in Asaka, Saitama Prefecture, near Tokyo. No radioactive iodine has been detected at the Ozaku purification plant in Hamura in the suburbs of Tokyo, the Kyodo news agency reports.
The detected figures at the three facilities of the metropolitan government's Bureau of Waterworks were below the government's set limits of 100 becquerels for safe consumption by infants under one year old and 300 becquerels for adults.
On Tuesday, 210 becquerels of radioactive iodine was detected at the Kanamachi plant, leading the government to issue an advisory for people in Tokyo's 23 wards and five of its suburban cities-Musashino, Mitaka, Machida, Tama and Inagi on Wednesday that infants should not be provided with tap water.
The metropolitan government, however, lifted the advisory on Thursday following a decline in radioactivity levels to 79 becquerels.