Cleanse the Water Stone | Main story mode - Cleansing the Stones TES V: Skyrim - Dragonborn Guide
Last update: 11 May 2016
Reaching this stone is by far the least comfortable. You need to head to the Bloodskal Barrow (The Final Descent mission) and head north. As you see the pillar of light coming from the stone, take a look around for a path on the right (you need to follow the shore). Follow it and you will reach your destination. Use the Bend Will Shout and wait for the temple to crumble.
Fighting the Lurker might be rather difficult - only some of the constructors will decide to help you. There's also a chance that a Dragon will join the fight - attacking both you and your enemy (its soul however will be absorbed by Miraak, so don't hope for a profit!). Fight wisely and make use of healing potions and you should be alright.
After dealing with all threat, approach the obelisk to learn the Waters of Life. It's capable of restoring 300 health points to all nearby characters, but you can only use it once and afterwards have to renew it at the Water Stone.