If that's true that's a fantastic achievement. I wonder how well Glasto and the other mega-festivals did?
Just Glastonbury :
Based on how much shit was left around by the end of this year's festival in various public camping areas, very poorly
It was noticeably less bad this time (in a completely dry year) than in 2016 (pretty damned wet/muddy) but that's no excuse
I blame those punters who just ignore all the efforts the organisers make to push the 'Love the Farm Leave No Trace' message. And the whole theme of Shrangri La this year was to push the 'don't leave your shit behind' message too, and much more creatively there than the official message. There'll be pictures with a few searches ...
The Glastonbury Green Fields, more
directly comparable with the Green Gathering (and with some of the same people), were impeccable this year and in previous ones, as were some of the crew areas ...
But at such a huge fest in general, a festival can try its hardest to maximise recycling, but you can lead the public only so far to the reycling bins etc. ...
(Historically, festivals like Reading and V have always been vastly worse -- but I've no recent experience of them).