Preheat oven to 300 degrees. Prepare a baking sheet by lining with parchment paper or silicone mat. Set aside.
In a medium bowl, add egg white and water. Whisk together until egg white is frothy. Add pecans and toss until evenly coated in egg white mixture.
In a separate small bowl, add sugar, cinnamon, and salt. Stir together to combine. Sprinkle over pecans and toss together until pecans are evenly coated and the mixture is clumped into the pecans and no longer loose.
Place pecans into preheated oven to bake for 45 minutes, stirring every 15 minutes to prevent caramelization. Remove from oven and let cool before eating.