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A water recycling centre has undergone a multi-million pound refurbishment to better filter chemicals from sewage water.
The £11 million project carried out by Wessex Water at Langport over the past 18 months is meant to improve the water quality of the River Parrett and other Somerset waterways.
Project manager Victoria Plummer said: "Chemicals like phosphorus can cause large growths of algae in waterways, damaging plants and animals in those areas by depleting the amount of oxygen in the water."
In the last few years, more than £40 million of similar work to improve treatment methods has been completed or got started across Somerset.