Zarkut is able to recognize that the majority of the covenant is a level 5 aura, though the labs are congregated within a level 8 aura, and that the aura has an allinment of hungry, which will double it's value for spells of PeCo, PeHe, PeAn and PeAq, but also tends to make people require more sustenance, as well as to make things break down, rot, or be consumed by natural forces more easilly. This, in addition to the dry heat is what is causing the fountain to evaporate mid air.