According to research, groundwater from an underground nuclear weapons test site in North Korea could be distributing radioactive substances to individuals in the country and outside. According to research issued on Tuesday by the Seoul-based Transitional Justice Working Group, eight cities and counties around the Punggye-ri facility, where Pyongyang is thought to have conducted six nuclear tests between 2006 and 2017, could be damaged. More than one million people reside in the possibly damaged region, where groundwater is used every day, including for drinking. According to the human rights organization, people in South Korea, China, and Japan could also be at risk because of North Korea’s smuggled agricultural and fishery products.