Water firm fined £2.3m for ‘preventable’ sewage spill '); '); THAMES Water has been fined £2.3million for a pollution incident in Henley that resulted in the death of 1,200 fish. Raw sewage leaked into the Fawley Court ditch and stream that flows into the River Thames over four days in April 2016. Aylesbury Crown Court heard that the incident was “entirely foreseeable” but the company had failed to address equipment faults at the Henley water treatment works due to poor management. There was no adequate monitoring in place to manage the risk of pollution, which was made worse by staff not responding to alarms highlighting faults in the process.