The most significant problem of the Kaljakellunta festival has always been the amount of rubbish left in and around the river by participants every year. Although a big rubbish container has been brought to the end of the route a couple of times, a large amount of people still leave their boats, beer cans and other rubbish floating in the river or on shore.
So make sure to bring a bin bag with you and take care of your own rubbish! A voloutary cleaning event is organised this year too for the next day, you can find their Facebook event here.