Now you know why people were just getting naked and jumping into streams. If you wanted to wash yourself within the festival's normal arena, here's what the facilities looked like. It's basically a pipe jammed into the ground with a hosepipe in it, spurting out a pathetic amount of water. You couldn't wash a dog with that, let alone a human.
Most people used it to cool down more than they did to actually clean themselves, although it wasn't bad if you just wanted to give your hair a quick rinse. Unfortunately, the water constantly splattering out onto the ground around it made the surrounding area very muddy, totally defeating the point of the exercise. The man in the picture seems to be rinsing off his feet, which he surely realized was a waste of his time the moment he put them back down again.