Wash fresh peaches and lemons thoroughly under cool water. Slice peaches into wedges, discarding any pits. Roll lemons on the counter to release their juices, then cut in half and juice.

In a blender, combine the peach wedges, freshly squeezed lemon juice, and sugar. Blend on high for 30-45 seconds until smooth.

Strain the blended peach mixture into a pitcher using a fine mesh strainer. Press down to extract juice while leaving pulp behind.

Stir in chilled filtered water to adjust sweetness and tartness. Add ice cubes and chill for 10 minutes before serving.

Pour lemonade into glasses, garnish with lemon slices and fresh mint leaves. Serve immediately.