I dont see any need to EDC a water bottle in most urban areas, in most conditions.
I have drinking water on tap and in bottles at home and at work, which about 3 hours walk apart, or about an hour by bus.

If some emergency required me to walk to/from work then carrying water would be sensible, but not normally.

If some disaster or emergency struck whilst I was in transit, I am never more than about 90 minutes walk from home or work.
Even in hot conditions I am confident that I can walk that far without resupply.