Wash and dry the strawberries, and remove the stems. Mash the strawberries in a large bowl (to desired smoothness, or blend if really smooth is desired). In a small saucepan, bring the water and pectin to a boil and boil for 1 minute. Add the mashed strawberries and stir for 1 minute. Turn off heat and stir in sweetener. Ladle the jam into container and let cool to room temp. Cover and place in the refrigerator overnight to let it set. Store in the freezer if desired or up to 1 year, in the fridge for 3 weeks.