By Bethany Wales Three water have been fined £168m for failing to manage their wastewater treatment works and networks properly, Ofwat has announced today. Thames Water has been fined £104m, Yorkshire Water has been fined £47m, and Ofwat charged Northumbrian Water £17m. These fines are related to the companies’ poor management of wastewater treatment works and wider sewer networks, including their operation of storm overflows. These overflows are meant to release water only in exceptional circumstances, like heavy downpours or snowfall, to prevent sewage from flooding homes. However, Ofwat’s f…