While its usefulness in regular Undead instances like Stratholme cannot be denied, it really shines as an assist during the third phase of the Nefarian fight, in which upwards of forty undead constructs spawn and rush the group. The Water is generally used by the warriors who run out to intercept the constructs, as they are apt to have the most constructs around them, so they get the most benefit out of them for the raid.
It is only obtainable in Stratholme as the name may imply. It can be found inside supply crates scattered throughout the instance. Boxes labled Stratholme Supply Crates always contain Stratholme Holy Water, whereas the boxes labeled Supply Crates are often trapped. Item also sometimes is droped by Undead Postman.
- The dwarven racial trait Find Treasure will help find non-trapped crates, which always contain food as well as a chance of potions and holy water.
- Rogues can detect trapped boxes by entering stealth. When hovering with the mouse over a trap-box they will see a green text that says "requires disarm trap". Using disarm trap on the box will remove the trap and reveal the real box, however this real box almost always falls apart too.
- Players on either of the quests requiring the holy water will be able to see the usual quest-lootable sparkles emanating from the non-trapped crates, until they have obtained the number of holy water needed for their quest.
- Used to scale with spell damage, making them extremely useful even in later content, but was finally nerfed in 2.4 to no longer do so.