I'm sure that decent fresh water is available within a short space. The thing to remember though is that they are there in October when the rivers and even tiny creeks have been flooded with salmon - and ALL Pacific salmon die after spawning. Add to that giardia are now present everywhere. That's why it's so vital that water is properly filtered or better yet boiled before drinking. So anyone who couldn't make a fire or drank water that was not collected from rain is in trouble. Giardia (beaver fever) is pretty nasty and we had a big outbreak here when floods removed filtering sand from the water intake for the municipal water supply. Even the amount of chlorine they add here didn't kill the stuff. Can giardia cause symptoms like that - you bet, and worse! You know when someone is about with a growing case or even after some treatment because the gas produced is pretty stinky. Someone may be going home to sleep in a tent for a while. People who quit earlier and who couldn't start a fire might just be taking home some passengers! There is also the aspect that lack of coordination and/or paranoia are a huge early symptoms of giardiasis.
I was even careful to pack lots of pop/ bottled water when I went out with grand-kids who don't favour hot drinks like geriatrics (I am one of the few people to use a Kelty Basecamp as a day bag..), and was darned careful how I placed the bottles and cans to cool to avoid contamination. I sterilise cups etc.., washed in stream water.
I didn't like the title of the show - "Stalked" because of course every unhunted critter in whose territory you are, is going to come and check you out at close range and that's what the trail cameras are showing. It can be pretty unnerving, but it may not be malicious. Because workers at a local plant feed wildlife, then even on a local coast trail I've had first foxes show up for handouts and then when coyotes displaced the foxes, those too would eat out of your hand. The latter shocked me because I'd only experienced coyotes in places where they are hunted. But there is the rule that while people even in a hunting or fish camp are pretty secure sleeping by firelight, don't ever walk out of the light, at least in grizzly territory. I was surprised to find that info even in George Leonard Herter's book, but I have more recent knowledge of how bad things can go. At the same time I've known tree planters who camped by a salmon creek and who had MANY bears pass right by their camp at night while they were snoozing around a fire. Cougars, lynx and bobcat are total carnivores so they don't make noise when stalking, only when casually looking around, so I'm not taking the snapped twig and pictures as a threat. Nevertheless what lover of pistols doesn't love the old Colt Ad where the cowboy is sitting by a fire at night - and "Snapped twig - Colt - Confidence!". Great stuff and advertising but when you are sitting by the fire with a real (elephant - no prejudice I love them) gun which will shoot through the bones of any griz, even if it's been careful enough to bring armour - just what are you supposed to do with that at night?
I think we have one more about to go down, then things should get really interesting