Welsh Water admits illegally spilling sewage for years

Welsh Water has admitted to illegally spilling untreated sewage at dozens of treatment plants for years. 

One of their worst-performing plants is in Cardigan in west Wales. 

The company has been spilling sewage there into an environmentally protected area rare dolphin habitat for at least a decade.

Welsh Water says it is working to tackle the problems. 

Most of the UK has a combined sewerage system, meaning that both rainwater and wastewater – from toilets, bathrooms and kitchens – are carried in the same pipes. Usually, all the waste is carried to a sewage treatment works.