Magical appearance of water in storage

I am not complaining of course not I am just flabbergasted...:)

Did anyone else found large quantities of water just appearing in their storage out of nowhere?

... have you put your stables/friaryes/breweries/bakeries to sleep maybe?

(Edit: check your economic overview)

Nope... I am telling you it wasn't there and next minute I have 50,000 water...

Now I have strange suspicion that I somehow managed to buy this water because I am missing 200 coins but I have not purposely clicked on such trade nor does it shows in my history of trades....