Watermen: A Dirty BusinessEpisode 6

The final episode in the series begs the question, who would flush a pair of designer underpants and how big can a fatberg be? For Chris and Mark a pair of pants is just one of many treats they get on a weekly basis as they maintain Lennox Gate Pumping Station in Blackpool. Whilst, over in Davyhulme, Scott and Wayne face an estimated 100-tonne fatberg, an eye watering sight and smell but all in a day's work for the lads who handle these gut-wrenching jobs.

Watermen: A Dirty Business was broadcast on BBC2 at Monday 23 June 2014, 03:18. This episode was initially placed on Wednesday 21 May 2014.