But she still managed to make double her previous pay, with her £1.5 million salary dubbed a "golden hello" as she moved from Severn Trent.
On Tuesday chairman Ian Marchant said: "I want to thank Sarah for everything she has done since joining the company in 2020, building a first class executive team and leading the first phase of the turnaround of the company.Surfers Against Sewage rep gives a message to water companies ahead of protests
"The foundations of the turnaround that we have laid position the company for future success to improve service for customers and environmental performance.In May, water companies apologised for not acting quickly enough to tackle sewage spills as they announced the biggest modernisation of sewers "since the Victorian era".
Environment Agency figures earlier this year showed there were a total of 301,091 sewage spills in 2022, an average of 824 a day.