First Filter
Definitely not enough to feed everybody, so you notice anybody hurting (or if you are yourself) they'll go pretty fast. Not too worried about them going to waste this week.
There was mention of a nearby river. If you found water bottles we can at least use them to bring in a supply. Maybe look for a pot or something we can boil the water in first, but we'd still need a way to get it from the river to the campus, so that's a great start.
You didn't like those? Apart from being dehydratingly chalky I didn't think they were too bad. Definitely better than the MREs we had back in the day, those were like chewing rocks.