The Kosher for Passover label only gets put on things around Passover . Other times of the year they are labeled differently . I am drinking a Simply Lemonade and it has the kosher certification on the back label . It is the small u with the circle around it :)
Kosher label looks like this http://www.elliottsamazing.com/images/OU_logo.gif
I love Simply Lemonade. Nearest thing to homemade out there