ENGINEERS from Bolton are set to make a splash in a BBC documentary.

Life working for North West water company United Utilities is the subject of the six-part show, Watermen: A Dirty Business.

More than 750 hours of filming went into making the observational documentary, a brainchild of Mentorn Media, the company behind Hotel of Mum and Dad and Sky’s Greggs: More than Meats the Pie.

Customer support technician Andy Bromley, aged 33, from Westhoughton features alongside colleague Terry Keenan in the show during the series.

Meanwhile, the show also features the efforts of Mick Barton, a 27-year-old sewer technician from Radcliffe, whose work with colleague Shaun Dullaghan forms the subject of one episode.

The show’s main "waterman" is John Butcher, United Utilities’ regional aqueducts manager and self-confessed pipeline anorak.

He said: “When I saw myself on screen the first thing I thought was that I need to lose about three stone.

“It makes you reflect on the job that we do when you see it through someone else’s eyes.

“I knew I’d hit the big time when my photo made page 16 of TV and Satellite Weekly.”

The series begins with Britain in the midst of the 2013 summer heatwave with the water company’s staff battling the illegal use of fire hydrants and revolting sewer problems exacerbated by hot weather.

Executive producer Hannah Wyatt said: “Without clean water we couldn’t survive.

“This behind-the-scenes series meets the unsung heroes who keep our taps flowing.”

United Utilities provides water to more than seven million people in the region, managing 42,000 kilometres of pipes, and is the biggest water firm on the FTSE 100.

The series started on Tuesday on BBC Two and will continue every Tuesday at 9pm until May 20.