Top-rated UK water firms ‘dumped 1,374 illegal spills into rivers’

Exclusive: United Utilities and Severn Trent had four-star environment ranking but discharges breached permits, campaign group says

Ankle deep in sewage': English spring water village suffers supected unlawful spills

Two of England's biggest water firms dumped raw sewage into rivers across the country in suspected illegal breaches of their permits, despite being given the highest possible rating by the regulator for their environmental performance, the Observer can reveal.

Severn Trent Water and United Utilities were responsible for 1,374 raw sewage spills from sewage treatment works in apparent breaches of permits over a two-year period in more than 80 watercourses, according to an analysis of previously unpublished operational data. It is alleged the suspected illegal discharges were during dry weather or at times when the plants were not at operating capacity.