Thames Water's £3m Abingdon sewage works complete
A £3m improvement scheme at an Oxfordshire sewage works has been completed.
Thames Water said the works at Abingdon would ensure the quality of the water in the River Thames was "exceptionally high".
The works included increasing the capacity of storm tanks to allow heavier flows of wastewater and fitting "odour control" sludge-holding tanks.
Abingdon sewage works currently serves more than 36,000 people.
Richard Aylard, Thames Water's director of sustainability, said: "The River Thames is a hugely important river for wildlife in our region and we want to keep the quality of the water exceptionally high."
The River Thames is home to great crested grebes, red kites, osprey and freshwater mussels.
The Abingdon project supports Defra's national Love Your River campaign, which urges people and organisations to look after their local rivers.
Thames Water was fined in June for twice letting raw sewage seep into Sandford Brook, Abingdon.
The Environment Agency prosecuted the firm over incidents in February and March of last year.
Thames Water was ordered pay a total of £15,515, which included a fine of £8,000.