Japan begins 20th release of treated nuclear wastewater amid ongoing controversy

Japan commenced its latest discharge of treated wastewater from the crippled Fukushima Daiichi Nuclear Power Plant into the Pacific Ocean on Monday, June 1, 2026. This marks the 20th such release since the program began in August 2023, continuing amidst ongoing controversy and opposition.

The operator, Tokyo Electric Power Company Holdings (TEPCO), plans to release around 7,800 tons of water by June 19. TEPCO asserts that the water has undergone treatment to remove most radioactive substances and meets safety standards set by Japanese authorities and international regulators. The discharged water contains approximately 1.3 trillion becquerels of tritium.

The Fukushima Daiichi plant suffered severe damage from a magnitude 9.0 earthquake and subsequent tsunami on March 11, 2011, leading to meltdowns in three reactors and a significant radioactive leak. This incident is classified as Level 7 on the International Nuclear and Radiological Event Scale (INES), the most severe rating, shared with the 1986 Chernobyl disaster.

“

The water that will be released contains about 1.3 trillion becquerels of tritium after undergoing a treatment process that has been claimed to meet safety standards set by Japanese authorities and international regulators.

Despite assurances from the Japanese government and TEPCO regarding the safety of the treated water, the policy faces criticism. Local fishermen worry about the potential damage to consumer confidence in seafood from the Fukushima region. Environmental groups question the long-term effects of releasing tritium-contaminated water into the marine ecosystem.

Since the discharge program started, nearly 150,000 tons of treated water have been released into the Pacific. The ongoing controversy highlights international concerns about environmental safety, marine food security, and public trust in managing the aftermath of Japan's most severe nuclear disaster since World War II.

“

The policy is still facing criticism from local fishermen who believe the move could damage consumer confidence in seafood caught in the region, while environmental groups question the long-term impact of releasing tritium-containing water into the ocean.