Fourth-year pupils from a village school in Essex have discovered concerning pollution levels in the River Stour through water quality sampling conducted with a local environmental charity. The children expressed distress at their findings regarding a waterway that is nationally significant and central to their community, with concerns that degradation could threaten both the ecosystem and the recreational value that makes the area a beauty spot.

Motivated by their discoveries, the young scientists intend to approach their local MP requesting infrastructure improvements, specifically a storm drain on the A12, to prevent chemical runoff entering the river. Their efforts represent a form of citizen science, with support from PACE, a charity that monitors aquatic invertebrate populations to assess water quality, whilst environmental regulators have highlighted multiple factors affecting river health beyond water company responsibility alone.