Combine 0.5 cup water and 0.75 cup sugar in a pot. Heat over medium heat until sugar is completely dissolved and creates a simple syrup.
Cut lemons in half and squeeze to get fresh-squeezed lemon juice.
Blend 1 cup blueberries, 0.5 cup fresh-squeezed lemon juice, and 0.5 of the syrup in a blender or food processor until smooth.
Strain blended mixture through a mesh strainer to get the juice out.
Combine 3 oz. of the blended blueberry juice with 4 oz. cold water in an 8 oz or larger glass. Add ice, fresh blueberries, and a lemon wedge for garnish.
Notes
This homemade blueberry lemonade is the perfect balance of sweet and tart, with a delightful berry flavor. It's ideal for parties, picnics, or just a refreshing treat on a warm day.