Sewer storm overflows are used to stop the sewage system from
backing up and flowing back up pipes into peoples' homes. After
heavy rain water utilities are allowed to release sewage into waterways. The UK
Environment Agency have revealed that almost 16,000 sewage dumps occurred in
Derbyshire last year.
Severn Trent manage the
majority of Derbyshire's water treatment. Statistics show that most sewage
dumps occurred in the river Derwent (4,931) which totalled 36,096 hours of
outflow. These were by four different water companies - Severn Trent Water, Yorkshire
Water, United Utilities and Northumbrian Water. Human waste was released into
the River Trent 2,366 times.
Figures for local waterways are
shown below:-
River Derwent - 4,931 dumps (36,096 hours)
River Trent - 2,366 (16,744 hours)
River Erewash - 1,425, an increase of 464 (15,614 hours)
Erewash Canal - 72, an increase of 7 (356 hours)
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