The purpose of placing used nuclear fuel in a deep geological repository is to provide long-term safety and protection of the environment, including bodies of water. Water safety is central to APM environmental and safety assessment studies, which will undergo a stringent and public regulatory review process.
Today, used nuclear fuel is safely managed on an interim basis at licensed facilities at the reactor sites where it is generated; a repository provides an even safer way over the very long term to manage used nuclear fuel.
The NWMO must demonstrate that any site selected to host this facility is able to safely contain and isolate used nuclear fuel for a very long period of time, essentially indefinitely.
A deep geological repository would be sited in a rock formation with low permeability, which means there would be little groundwater movement at depth. Safety of people and the environment is the top priority in the process for selecting a site for a deep geological repository.
Presentations about Water
The Journey of Water
The Journey of Water Part 2