1. In a medium size bowl place frozen blueberries, sugar and water. Warp the bowl with plastic and put in microwave for 4-5 min. blend the blueberries until smooth and Pour the mixture through a strainer. Let cool to room temperature.
2. In a large mixing bowl whip cold heavy cream until stiff peaks. Gently fold the sweetened condensed milk until soft and smooth.
3. Fold in the blueberry mixture.
4. Transfer to a freezer container, freeze for at least 6 hours.