Contaminated Fukushima water could damage human DNA, Greenpeace says

Storage tanks for radioactive water are seen at Tokyo Electric Power Co's Fukushima Daiichi nuclear power plant
The radioactive water has been stored in huge tanks which will fill up by 2022

Contaminated water from Japan’s Fukushima nuclear plant contains a radioactive substance that has the potential to damage human DNA, a report by Greenpeace says, the claim from the environmental campaign group follows media reports suggesting the government plans to release the water into the ocean. Many scientists say the risk is low but some environmentalists oppose the idea, the government has not yet responded to the Greenpeace report.

For years Japan has debated over what to do with the more than a million tonnes of water used to cool the power station, which went into meltdown in 2011 after being hit by a massive tsunami. Space to store the liquid which includes groundwater and rain that seeps daily into the plant will fill up by 2022. The government says most of the radioactive isotopes have been removed using a complex filtration process but one isotope, tritium, cannot be removed. The government said no decision had been made, but observers think one could be announced by the end of the month. Environmental groups have long expressed their opposition to releasing the water into the ocean. And fishing groups have argued against it, saying consumers will refuse to buy produce from the region.

However some scientists say the water would quickly be diluted in the vastness of the Pacific Ocean, and that tritium poses a low risk to human and animal health, on 11 March 2011, a 9.0 magnitude earthquake struck off the north-eastern coast of Japan, triggering a 15-metre tsunami. While the back-up systems to prevent a meltdown at the Fukushima nuclear plant survived the initial quake, further damage was inflicted by the tsunami, as the facility’s cooling systems failed in the days that followed, tonnes of radioactive material were released. The meltdown was the worst nuclear accident since Chernobyl in 1986, around 18,500 people died or disappeared in the quake and tsunami, and more than 160,000 were forced from their homes.

Billions of dollars in compensation have already been paid to individuals and businesses affected by the disaster. Last month, a Japanese high court upheld a ruling ordering the government and the plant’s operating company to pay a further $9.5m (£7.3m).

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