Take the Purified Moon Well Water to Greta Mosshoof in Felwood.
Thank the spirits, [player]. They are the ones that have come to your aid, not me.
I give this purified water to you now. Please give my regards to Greta and my best wishes. She is tackling something greater than many of us... as I'm sure she will soon find out.
The Shadow Council is not a force to be trifled with, [player]. Remember that.
Go now. Take the water and return to Greta.