These should be starting to pop up as needed recipe's for Alchemists, as many tailors and leatherworkers will be looking for Essence of Water/Air/Earth/Fire.
From what I have found, water and air do not drop but are transmuted from earth/fire/undead, but nobody seems to know where to get the recipe for this.
I am needing to know where to get Transmute Fire to Water, Transmute Earth to Water, Water to Air.
Any help would be appriciated....