This was shared at my Monday Weight Watcher meeting. I made it on Tuesday and it was refreshing and 0 points!
1 cup water
1 cup splenda
1 cup lime juice (or lemon)*
6 cups cold water
Mix the water and splenda in a microwave safe glass. Micorwave on high until the splenda is completely melted. Combine everything and chill.
It took me 7 limes with my citrus juicer to get one cup.