As far as safety, I would expect this depth to be below and away from any groundwater, Nuclear power needs lots of water for cooling and this is no except

As far as safety, I would expect this depth to be below and away from any groundwater, Nuclear power needs lots of water for cooling and this is no exception. Can you realistically have a nuclear power plant far enough away from groundwater that this isn't a concern? Not a rhetorical question. Maybe you can!