Rinse the raspberries and drain them. Transfer the raspberries to a blender and puree until smooth.
In a pitcher, combine the pureed raspberries, coconut water, lemon juice, and sugar, stirring until well mixed. If using sugar, ensure it is completely dissolved. Add ice to the pitcher, then pour the raspberry lemonade into glasses and garnish with lemon wedges.
Notes
I used Kimbo Young Coconut Juice with pulp and strained out the pulp. Raspberries are tart, so add more sugar or agave to taste.