In the agricultural belt of Xuzhou, Jiangsu Province, a 12-kilometer canal known as the Nonggu Road Ditch serves as the lifeblood for local farmers. Intended to provide irrigation for wheat, garlic, and strawberries, the waterway has instead become a toxic corridor of black, fetid sludge. Recent investigations reveal that the canal is being systematically choked by illegal discharges from unlicensed sheepskin and sheep byproduct processing workshops.
These small-scale family operations utilize highly corrosive chemicals, including caustic soda and industrial salt, to strip wool and preserve hides. The resulting wastewater—a hazardous cocktail of blood, fat, and industrial chemicals—is piped directly into the irrigation network via hidden drainage tubes. Local residents report that the stench is so pervasive it has crippled local businesses and forced farmers to dig private wells or pay extra to bring in clean water from distant sources.
Laboratory tests of the canal water present a grim picture of ecological collapse. Chemical Oxygen Demand (COD) and ammonia nitrogen levels were found to be 70 times higher than the national limit for the lowest grade of surface water. Experts warn that these pollutants not only suffocate the local aquatic ecosystem but also seep into the groundwater, posing long-term health risks to the surrounding villages and threatening the safety of the local food supply.
Perhaps most striking is the failure of local governance to address a problem that has been reported for years. In late 2023, local authorities published a rectification report claiming that illegal workshops had been closed or equipped with treatment facilities. However, current evidence shows that many of these businesses simply moved their operations behind residential walls or shifted to nighttime production to evade detection. When confronted, local environmental officials admitted that the 'home-based' nature of these workshops makes them exceptionally difficult to monitor and regulate.