One thing I didn't anticipate was radioactive contamination of the drinking water from another region. For example, a nuke has an incident in Ohio and fallout hits the Quabbin.
Because Seabrook and Plymouth aren't that close I didn't think that was much of a concern.
Garand,
That was my point about not relying on bleach/shock to clean your water. It's been 2 weeks and the wind has been blowing fairly consistantly east, yet the water 140 miles south, south west of the plant is showing elevated radiation levels.