The shocking state of our rivers shames Britain. Where leaping salmon once were there is now factory-farmed chicken waste and effluent. But are swimmers and salmon compatible? And what else is in our rivers that OFWAT (Water Services Regulation Authority) doesn’t expect the water authorities to monitor? Can rivers regulate themselves?

ARK's director Charlotte Hitchmough will be a panelist at this event, which promises to be a lively discussion. For tickets please visit the Altered State website.