Sewage spill investigation extended to all water firms

All 11 water and wastewater companies in England and Wales are now under scrutiny over sewage spills, after the regulator said it was expanding its investigation.On Tuesday, Ofwat opened enforcement cases into four more firms - Dŵr Cymru Welsh Water, Hafren Dyfrdwy, Severn Trent and United Utilities - as part of its probe into how companies manage their sewage treatment works and networks.It began its…