Add the sliced cucumber to a pitcher with 8 cups cold water. Refrigerate for at least 1 hour before serving. Use a wooden spoon to gently mash the cucumber slices to help release the flavor.
This cucumber water is best served the same day but you can also refrigerate the water for up to 3 days.
Notes
You can also add lemons, mint or sparkling water to change up the flavor of this easy cucumber water.