Aomori Prefecture Hachinohe City Industrial Waste Illegal Dumping Incident - September 2002 to 2020s

Aomori Prefecture Hachinohe City Industrial Waste Illegal Dumping Incident - September 2002 to 2020s

The illegal dumping incident of industrial waste in Hachinohe City, Aomori Prefecture, discovered in 2002, is known as one of the largest environmental crimes in Japan. Local waste disposal operators illegally buried approximately 300,000 tons of industrial waste in the mountainous area, including hazardous substances such as asbestos, polychlorinated biphenyls (PCB), lead, and cadmium, contaminating the groundwater. About 3,000 listed companies were involved, outsourcing waste disposal to illegal operators to reduce costs, and their legal and social responsibilities were called into question.

After the incident, Aomori Prefecture and the Ministry of the Environment began waste removal and purification work, but as of the 2020s, the cleanup continues, with costs exceeding initial estimates. More than 10 billion yen has been invested so far, but the complete treatment of asbestos and PCB requires advanced technology and additional budget. Groundwater contamination remains severe, and some areas require further remediation.

Health impacts on residents are also a concern, with hundreds of cases of health damage reported. Cadmium and lead contamination is also affecting agricultural products, and restrictions on farming and compensation measures have been implemented. Claims for compensation against the companies involved continue, with major firms bearing part of the cleanup costs.

In the 2020s, a digital waste management system was introduced, allowing the government and local authorities to centrally manage information on waste from generation to final disposal. This system has significantly contributed to the early detection of illegal dumping and improper handling, helping to prevent recurrence.