Blend the strawberries with 1/2 cup of water in a blender on high until well pureed.
Pour the pureed strawberries through a fine mesh strainer into a pitcher.
Add the remaining water and fresh lemon juice.
Taste and add sugar as needed depending on the sweetness of the strawberries.
Pour over ice and serve with lemon slices in the glass and a strawberry on the edge. Enjoy!