Items, NPCs, quests, objects and spells of patch 1.12.1, read live from the realm itself.

Water Elemental Core

NPC Level Zone Chance

Sea Elemental 48 - 49 Feralas 50.0%

Sea Spray 47 - 48 Feralas 50.0%
Quest Level Side

Fuel for the Zapping 48 Both

Refuel for the Zapping 55 Both

NPC	Level	Zone	Chance
Sea Elemental	48 - 49	Feralas	50.0%
Sea Spray	47 - 48	Feralas	50.0%

Quest	Level	Side
Fuel for the Zapping	48	Both
Refuel for the Zapping	55	Both