Good suggestion!
Also, it'd make sense if the villagers would access the water themselves, so it's not frozen solid thick.
Maybe add graphic of well ring and plank cover, then it'd be easy to spot and allow the water to be accessed without breaking the ice in winter.
Alternative graphic would be a
shadoof. Family farm my dad was born* on in 1946 (no electricity, no running water, root cellar, outhouse et cetera) had, likely still does have, a working shadoof in the yard.
*yes, born in the sauna before anyone asks
![Cheesy :D](http://www.unrealworld.fi/forums/Smileys/default/cheesy.gif)