Environmental and water consultant Carolyn Roberts, who plans to bring the claims, says water companies would have faced penalties if they had properly reported pollution incidents. The firm said it will also be filing cases against five other companies – Thames Water, United Utilities, Anglian Water, Yorkshire Water and Northumbrian Water – in the coming months. Water companies have pushed back against the proposed claims, describing them as "highly speculative". A Thames Water spokesperson said the company was aware of the potential claim, which they said was without merit. Water companies have avoided being penalised by regulator Ofwat for "serial and serious under-reporting" of pollution incidents, she said in a statement.

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Persons: Trent, Darren Staples, Carolyn Roberts, Roberts, Leigh Day, Severn, Sam Tobin, Bernadette Baum Organizations: REUTERS, Severn Trent, United Utilities, Yorkshire Water, Environment Agency, Water, Thomson Locations: Cropston, England, British, United, Water, Yorkshire, United States