6/6 Who would flush a pair of designer underpants and how big can a fatberg be?
5/6 Residents in Manchester face a year of noise and chaos.
4/6 How the workers of United Utilities deal with the ageing sections of the water grid.
3/6 How the workers of United Utilities deal with potential disasters in the water supply.
2/6 How water companies tackle the hundreds of litres of fat poured down the drains each week.
1/6 Temperatures rise and residents in Salford illegally open fire hydrants to cool down.