The optimists have been over-confident. Reports of sickness have come in from six shelters on Level 4 and two on Level 5. Four more shelters on Level 3 are affected.
All three levels have been ordered to distill all their drinking water. It is not enough to boil it: they must distill it. I do not know how they will set about doing that, for they have no special equipment for the job. But they will have to manage somehow—or else go on drinking poisoned water.
The military levels, 6 and 7, are all right. Our water supply comes from a really great depth.