Water
From Cantr II Wiki
Water isn't a visible resource, but can be collected everywhere with the use of a water skin, a water pump or a well. It is used to create mud from sand, in baking brick, and is an ingredient in some apothecary mixtures. It is also used to distill alcohol in a pot still.
Water is gathered at a rate of:
25 grams per day using a waterskin
200 grams per day from a water pump
400 grams per day from a well