Nachtus,
Hey thank you , good find. Yes I messed the well up cuz I was fixing it so when it rains, it adds water to the well filling it back up...so yes it is broke currently (very sorry for your extra digging )
fixed
Now building the Well starts out with 14 drinks. If it rains anytime it is below 14 drinks, the rain adds +1 drink every hour it is raining filling it back to 14 drinks. If you use ALL the water you collapse the well filling it with mud, and have to dig next to it removing the mud.
Additionally, the "age" of the well is checked every midnight update, if it is over 4 days old there is then, a random chance (1 in 5) it goes dry and fills with mud...where you are required to dig out the mud.