Why not add thirst alongside hunger. (instead of grabbing two plates of food, why not one food and one water.)
Water for the crops to make them grow. (The crops would totally thank you for it ;))
And washing for hygiene and health? (Did someone mention plague/ diseases? I do belive so!)
Now I understand flowing water is difficult, so I’m not asking for that.
What I was thinking instead was to be able to dig a water well.
You could start out with a “brought along” supplie to get you started.
Then have workers/miners? dig the water well, and then have stone mason and carpenter
to finish the job.
For number 1, I would say that it doesn’t seem to fit well. (No pun intended) what would you do make a well and then pump water buckets out and bring it to your stockpile? it seems a bit of a waste tbh. Although you could simply have it that they need to be close to a water source and then they would go drink by themselves.
and Number 3 I would say it is a good idea as well, but it would have to work like number 1 in that they would go to water source by themselves and wash up.
the well could possibly work like the carpenter/weavers workbench when you tell them to maintain a certain amount of something in the stockpile, and could be used by the workers.