Squeeze lemons into measuring cups, remove seeds. Pour sugar into bottom of pitcher, add lemon juice, stir until sugar dissolves.
Add water, stir. Add a few lemon slices into pitcher, and serve!
Store in pitcher or jar with a lid in the fridge for up to 3 days. Stir well every time you take it out before pouring another serving as sugar will settle to the bottom a bit.
** To avoid settling you can use liquid sweetener instead of granules or boil sugar with water, cool and then add.