Pre-heat oven to 250 degrees and line a baking sheet with parchment paper.
In a small bowl, whisk together egg white and water until frothy.
In a separate small bowl, mix together sugar, cinnamon, and salt.
Put pecan halves into egg white mixture until well-coated. Remove from egg white mixture and place in bowl with sugar, cinnamon, and salt. Coat pecans completely and place in single layer on prepared baking sheet.
Bake at 250 degrees for one hour, stirring every 20 minutes or so. Remove from oven and let rest before chopping into smaller pieces.