KINGS SOMBOURNE OUT CSM DATA Wastewater Treatment Plant, Test Valley, Hampshire

KINGS SOMBOURNE OUT CSM DATA is a wastewater treatment plant located in Test Valley, Hampshire, England, serving a population of around 2,156. The plant operates under the regulatory framework of the United Kingdom, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC) for secondary treatment standards. The plant provides secondary treatment, a standard level required for inland freshwater discharges under UK regulations. With a designed capacity of 2,156 population equivalent and a daily discharge volume of 480 cubic meters, the facility is sized appropriately for its small agglomeration. The plant's treatment process ensures compliance with environmental quality standards. The treated effluent is discharged into local watercourses that drain into the River Test, a chalk stream of high ecological importance, eventually reaching the English Channel. The River Test supports diverse aquatic life, including salmon and trout, and is a designated Site of Special Scientific Interest (SSSI) for its rich biodiversity.

The plant discharges into the River Test catchment, a classic chalk stream that flows into Southampton Water and then the English Channel. The River Test is ecologically sensitive, supporting diverse aquatic species such as salmon, trout, and the rare southern damselfly. The surrounding area includes water meadows and wetlands that rely on clean water for their ecological function.