# South London Bike Shop Faces Closure Due to Toxic Sewer Odors Persistent sewage stench from Thames Water infrastructure threatens the survival of a local business. - **Source:** [Business | The Guardian](https://www.theguardian.com/uk/business) - **Published:** 2026-10-17 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/1573902e-6dbd-4878-934f-5c837c3f35f9 ## Operational Crisis in Herne Hill Bicyclenation, a bike shop in Herne Hill, faces potential closure due to an unbearable, toxic stench emanating from Thames Water sewers. The odor, which began in June, has forced staff to evacuate the premises repeatedly. Mechanics are currently performing repairs on the pavement, a practice that is unsustainable as winter weather approaches. ## Documenting the Putrid Wafts Owner Tamas Polocz maintains a detailed smell chart to log the frequency and intensity of the gas emissions. Incidents occur at least five times daily, with descriptions ranging from cabbage to onions and feces. These putrid wafts are so powerful that they cause physical reactions, including gagging and vomiting among staff members. ## Thames Water Liability Acknowledgment After months of complaints and initial attempts to blame a gas leak, Thames Water finally accepted that a mains sewer beneath the shop is the source of the problem. Despite this admission, the company has failed to provide a concrete timeline for repairs, leaving the business owner in a state of extreme uncertainty. ## The Science of Sewer Stench Experts suggest the odor results from untreated sewage accumulating in pipes during dry periods, lacking rainwater to flush the system. Microbial activity creates foul-smelling gases similar to human digestion. Prof. Barbara Evans notes that initial rainfall may actually exacerbate the smell by stirring up the stagnant waste trapped within the outdated infrastructure. ## Health and Mental Toll The persistent exposure to sewer gases has severely impacted the physical and mental well-being of the eleven-person team. Polocz reports that the smell lingers on skin and hair, causing persistent coughing and anxiety. The owner describes a constant state of stress, struggling to sleep while worrying about the future of his shop. ## Systemic Infrastructure Failures The incident highlights the inadequacy of London’s Victorian-era sewage system in the face of modern climate conditions. Engineers noted that a critical cast-iron ventilation pipe, which previously mitigated odors, was not replaced. This failure to maintain essential infrastructure components has left local businesses vulnerable to hazardous conditions that threaten their continued daily operations. ## Business Survival Strategies To mitigate the financial impact, the shop has launched a collect-and-repair service to maintain revenue despite the inability to host customers indoors. However, board member Harriet Talbot emphasizes that relying on weather patterns for business viability is impossible. The team remains trapped in a cycle of evacuation, struggling to maintain professional standards. ## Ongoing Investigation and Resolution Thames Water claims to be investigating the source, stating that initial checks found no blockages. The company plans to install real-time odor monitors to track gas levels and identify the specific cause. For Polocz, these measures offer little immediate relief as he continues to fight for a definitive solution to save his business. ## Sources covering this story - https://www.theguardian.com/uk-news/2026/oct/17/south-london-bike-shop-stench-thames-water-sewer-herne-hill — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._