Sewers

In a special report we investigate what lies beneath - the sewer systems causing sewage to be pumped into our rivers, seas, even bursting into our streets.

New figures revealed that in a single year, waterways had sewage pumped into them for at least 3.4 million hours, which is equivalent to 388 years.

It comes after a group of French politicians accused the government of allowing the English Channel and North Sea to become 'dumping grounds' for leaked sewage.