It's the Irn Bru Burn! St Andrews river mysteriously turns ORANGE overnight

Environmental officers have launched an investigation into the cause of discolouration of the Kinness Burn, in St Andrews, Fife. https://www.dailymail.co.uk/news/article-9249341/Its-Irn-Bru-Burn-St-Andrews-river-mysteriously-turns-ORANGE-overnight.html?ns_mchannel=rss&ns_campaign=1490&ito=1490