TRING TRING HERTS STW - Dacorum, Hertfordshire Wastewater Treatment Plant

TRING TRING HERTS STW is a wastewater treatment plant located in Tring, Dacorum, Hertfordshire, England. It serves a population of around 12,300, classifying it as a medium agglomeration under UK and EU regulatory frameworks. The plant is situated near the Grand Union Canal and the River Bulbourne, a chalk stream that feeds into the River Colne and ultimately the River Thames. As a UK facility, the plant operates under the Water Industry Act 1991 and is regulated by the Environment Agency. For a population of this size, secondary treatment is typically required under the Urban Waste Water Treatment Directive (91/271/EEC), which the UK transposed into national law. The plant's treatment processes are designed to meet consent conditions set by the Environment Agency to protect receiving water quality. The treated effluent is discharged into the River Bulbourne, a chalk stream that supports diverse aquatic life, including brown trout and other sensitive species. The river flows into the River Colne, a tributary of the River Thames, which drains into the North Sea via the Thames Estuary. The plant plays a key role in maintaining water quality in this ecologically important catchment.

The plant discharges into the River Bulbourne, a chalk stream in the Thames Basin. Chalk streams are rare and ecologically sensitive habitats, supporting species such as brown trout, grayling, and aquatic invertebrates. The Bulbourne flows into the River Colne, which joins the River Thames, ultimately reaching the North Sea. Protecting water quality in this catchment is critical for maintaining biodiversity and meeting Water Framework Directive objectives.