If it's decided to ultimately return single-serving water containers (with the accepted notion that one "water" right now is one serving-sized "unit" of water and not one "jar", same as gas is in "units of" and not "cans of"), I don't want it to be a jar. You aren't boiling the water inside the container, you're dumping it into a cooking pot to boil then returning it to the container; practically speaking, there's no good reason for it to be glass. I've seen it suggested that the jars could have a breaking risk if they're in your inventory when you get hit, but that would be annoying.
For acquiring them- looting jars, fine, sure, you'd find jars; but why empty? Who keeps empty spaghetti jars in their cabinets? (Edit: Only being able to loot empty jars out of trash receptacles might be a consideration.)
For crafting them- making a glass jar that can accept the depicted metal lid? Every survivor in the apocalypse has mass production credentials in making glass because they read Stained Windows Weekly that specifically instructed them how to replicate Ball®'s standardized cap threading?
I don't care if you want to call it a Realism™ or Immersion™ sticking point, but using glass jars is silly to me. Bringing back empty metal cans and update the physical model to have a piece of string holding leather over the top when it's got water? Fine, I'll begrudgingly accept it. Hefty plastic jug with a cork stuck in the top? I might like that. But specifically glass jars feels ridiculous. I'd personally rather they not do single-serving empty water containers, instead expanding/tweaking the current water system to accommodate active collection alongside the passive generation the dew collectors bring. Maybe a station that functions like the forge with a 'contained' water resource that can 'smelt' murky water and snowballs, maybe a simple purifier to process murky in bulk from buckets; whatever is done, or if something is done - I just don't want it to use glass. I don't miss jars, but I enjoy systems being expanded on.
At this point maybe I should just make a Pimp Dreams with my envisioned water system because I've had to think of it so danged much.