'$PLAYER_NAME$, you are known to many of the elves of Rivendell, do not be surprised. I have a delicate mission that needs to be undertaken and I think you may be the $PLAYER_RACE$ for the matter.
'The waterfall above Tol Ascarnen has seen Angmar's forces visiting near its banks. Scouts report that they dump barrels of viscous material into the Hoarwell and further investigation has yielded evidence that the river is being poisoned. I have created a draught that will counteract this poison, but it must be delivered to the Hoarwell quickly.
'I ask that you take this draught and make your way to the waterfall overlooking Tol Ascarnen and deposit the draught into the river to cleanse the poison from the river. Do this and I shall see that you are rewarded.
Captain-General Tordur explained that scouts near Tol Ascarnen have seen a number of Angmar's servants dumping the contents of barrels into the river. Drawing water from the river shows that the river is slowly being poisoned. If this is allowed to occur then the little folk at Hoarhallow will certainly perish. Tordur provided you a cleansing agent and sent you to the waterfall to cleanse the river.
Cleanse the Hoarwell River of the poison introduced by Angmar