Wash the lemons, cut them in half and juice them into a measuring cup. Set the lemon juice aside.
Add the water and sugar to a saucepan and bring to a simmer until the sugar has dissolved. This will make the simple syrup you'll need for the lemonade
Remove the simple syrup from the stove, pour into a pitcher and place in the fridge to cool.
Mix the lemon juice into the pitcher of simple syrup
Add 1 cup cold water and 3-4 cups of ice until you've reached the perfect sweet vs sour lemonade.