I LOVE THIS STUFF....
1 cup fresh squeezed lime juice (about 4 limes if they are good sized)
1 cup granulated white sugar
2 quarts water
Place fresh squeezed lime juice in a 2 quart pitcher.
Add 1 cup granulated sugar, Stir to combine. Allow sugar to dissolve, takes just a few minutes
Add 1 7/8 - 2 quarts water to taste
Stir well until combined.
Serve limeade over ice and garnish with lime slices.