Thames Water

The incident is believed to have killed approximately 3,000 fish

Thames Water and Southern Water will have to return £53m and £46m respectively to their customers

The company predicts that it will save enough energy to power 125 homes for a year by replacing a 40-year old control unit panel with an energy efficient alternative

Thames Water has to pay nearly £16.7 million and Southern Water £4.9 million for poor customer satisfaction

The money, half of which will be funded by shareholders, will be spent to reduce leaks and bursts and upgrade hundreds of kilometres of water mains

Waste sludge from sewage treatment will be used to create biomethane to warm homes

Ofwat found the data used to calculate the invoices for nearly 14,000 water supply points were incorrect, which resulted in some business customers being overcharged

Last year saw the second-highest number of serious pollution incidents since 2015, a new report suggests

The water supplier plans to achieve this goal through waste-to-energy, solar and heat recovery schemes

The appointment aims to underpin the company’s net zero target for 2030