Thames Water has admitted to failing its customers after a “highly offensive” odour incident left many people with mental and physical health problems. The UK’s largest water company says it accepts “full responsibility” after untreated sewage was left to fester at a treatment works for months. A damning report into the incident in Camberley describes how thousands of residents were unable to go about their daily lives given the difficulty of avoiding an odour that permeated both indoors and outdoors.