Continuity mistake: The Jaguar crashes into Erin's car at a speed, let's say 40 mph. Later Erin's car has two new doors on the right. But the Jag didn't crash into the middle of the car, but more to the back. And I didn't see any windows break during the crash. Would a car like this only need a couple of new doors? Some big cars are write-offs after a sidecrash at 20mph, so the car would surely have more damage.
Continuity mistake: When Erin gets some information from a former PG&E employee whose job at Hinckley was to destroy evidence on the test well readings etc. they are sitting at a table nibbling peanuts. In close-up the areas around their hands are covered with shells, but when the camera changes to a wider angle all shells are gone.
Continuity mistake: Towards the beginning when Erin comes home from her court case (the car accident), she opens the door to put her stuff down, when she exits the house she leaves the door open, there is a different camera angle as she walks out and the door is closed (this happens as she goes to get her kids from the next door neighbour's house).
Continuity mistake: When Erin and Ed are talking to the PG&E representative, Ed puts the paper in front of the PG&E guy. It is about in the middle of the table. It is there for most of the shots, but then the angle changes, and changes back again, and the paper is all the way over on the PG&E guy's side, practically falling off the edge.
Continuity mistake: Erin gets some information from a toxicologist. When she asks him about the dangers of chromium VI they are walking down a hallway, but when he answers her question they are outside the building. Maybe an intended continuity break, but a very wrong-looking one.