For anyone having 10 minutes to read this, it’s an eye opener – I’d bet the Foss is pretty near as bad as the Windrush, though we do have some fish, at least for now, goodness knows whar another couple of weeks of no rain and sunshine will do. We’ve already had many reports of dead fish.
https://www.theguardian.com/environment/2022/aug/04/sewage-sleuths-river-pollution-slow-dirty-death-of-welsh-and-english-rivers

Dead fish by Foss