Regulator taking action against Anglian, Northumbrian, Thames, Wessex and Yorkshire water firms
The water regulator Ofwat has serious concerns over the way sewage treatment works at five water companies have been operated, as it continues to investigate the industry.
Anglian Water, Northumbrian Water, Thames Water, Wessex Water and Yorkshire Water submitted reports in December that have worried the regulator, Ofwat said on Wednesday. It said it was taking further action against the five companies and had started enforcement cases against them all.