Article: The Dangers if Tritium - Large amounts of the radioactive substance tritium are planned to be released into the Hudson River from Indian Point nuclear plant site, 25 miles north of New York City, and also from the site of the ruined Fukushima nuclear power plants in Japan, this 1.3 million tons of tritium-contaminated wastewater from the Fukushima plants, into the Pacific Ocean. Tritium can't be filtered out of water. How dangerous is tritium?