Is Glastonbury Literally Crapping on the Environment?

(Glastonbury flooding, 2005)
Glastonbury bills itself as an eco-friendly, sustainable festival, an image that has resonated with music fans and artists alike.  But is it possible to preserve or sustain an environment — any environment — with nearly 200,000 are convening upon one location for several days?
And let’s face it, trampling, trashing, pissing and crapping on that spot, every single year?
According to critics of Glastonbury’s environmental record, the answer