Dirty Business (2026)

Dirty Business exposes the hidden human and environmental cost of sewage pollution in UK waterways. Told in a docudrama format, the programme blends investigative storytelling with real footage to reveal the damage of sewage dumping, its impact on our rivers and communities, and the regulatory failures that allow harmful practices to continue. By focusing on the lived experiences of those affected alongside real-world footage, the mini-series puts this systemic issue onto people’s televisions in a gripping format.

The Human Cost of Sewage Pollution

Did you know?

Dirty Business – Best performing factual drama on Channel 4 streaming since Help – 2.4 million viewers for episode 1 and 232 million minutes streamed across the series.

Why is it effective?

The series tracks two Oxfordshire neighbours, exdetective Ashley Smith and computational biologist Peter Hammond, as they spend a decade exposing water companies dumping sewage into local rivers. What starts with dead fish in the Windrush river spirals into whistle-blower leaks, corporate coverups, and shocking human tragedy as a family lose their eightyearold daughter to Ecoli. and a surfer contracts a life changing and debilitating illness. Quoted as the next Mr Bates vs the Post Office, The Guardian described it “as a blast of controlled fury”.

01.

Connects environmental harm to human health and lived experience

Sewage pollution is not an abstract environmental issue. This story brings its real-world consequences to the screen. The tragic loss of life of an eight-year-old girl, illness, contaminated water and emotional distress caused by sewage pollution make the impact feel immediate and personal.

02.

Frames the issue as one of injustice and accountability

The programme highlights how sewage pollution disproportionately affects coastal and riverside communities, raising questions of responsibility, regulation, and who bears the cost of environmental damage. Dirty Business invites the audience to question why this is allowed to happen, and who pays the price.

03.

Uses a docudrama format to ground the story in real life

The format weaves together drama, investigative journalism and real social media footage of pollution incidents. This device mirrors how we might encounter this issue in their own lives, deepening the credibility of the content whilst building an emotional connection with the audience.

04.

Commercial visibility

Channel 4’s The Fountain of Filth stunt on London’s South Bank, which featured a fountain with bronze-like statues of men, women, and children appearing to vomit murky brown water, a sickening reflection of the real experiences of those who believe they were made ill by exposure to waterways polluted with untreated sewage. This highly visible stunt amplifies environmental messaging whilst inciting curiosity and conversation. It also worked as an effective marketing opportunity. Dirty Business is the best performing factual drama on Channel 4 streaming since Help with 2.4 million viewers for Episode 1 and 232 million minutes streamed across the series.

Real world impact

The producers worked closely with Professor Peter Hammond and Ashley Smith of Windrush Against Sewage Pollution. Their story, told in the series, began when they noticed the water in their local river had turned brown. Their questions turned into a 10 year investigation, during which they became the de facto regulator, whilst the official watchdog, the Environment Agency allowed an ecocide to unfold. Since the programme’s broadcast, WASP has been inundated with donations, further evidence of water company criminality and citizen-reports of life-wrecking illnesses after coming into contact with English waters.

Robert Forrester, an Environment Agecncy whistleblower, who gave up a 21 year career to tell the truth about the Agency and who supplied the makers with internal Environment Agency documents, has gone public. Robert, along with Heather’s mum Julie, WASP and the filmmakers, have appeared in front of the Water Minister in Parliament, questions have been asked on the floor of the House of Commons and Julie has met with the Emma Reynolds, the Environment Minister. A WASP petition, calling for a referendum on a return to public ownership, has tens of thousands of signatures, and a second petition calls for the removal (former Environment Agency head) Sir James Bevan’s knighthood. Anonymous expressions of support have come from inside the Agency and Dirty Business is now being taught in media studies and ethics classes around the country.