Defeat the Corrupt Manifestation of Water and place the Corrupted Manifestation's Bracers along with the Remaining Drops of Purest Water on the Brazier of Everfount in Silverpine Forest.
Along the coast of Silverpine, west of the Sepulcher, you will find a shrine that has become tainted by the plague. The spirits there no longer speak to our people and it will be up to you to defeat the manifestation and cleanse the pool.
Take the elemental's bracers, along with the remaining drops of Brine's potion, and place them on the brazier. The ritual should be enough to summon a pure spirit for you to communicate with.
Bring me proof the task is done, and I will reward you with your totem.