Revealed: the ‘black box’ wastewater trade that rakes in millions for UK utility companies

Exclusive: Firms made more than £340m last year from processing industrial and commercial wastewater at sewage works that are unable to remove many chemical pollutants Water companies in the UK made more than £340m in revenue last year by pouring billions of litres of industrial and commercial wastewater into sewage treatment works that experts say are not designed to remove most chemicals, leaving pollutants to pass into rivers, seas and farmland.

Water companies are…