SHENFIELD STW - Brentwood, Essex Wastewater Treatment Plant

SHENFIELD STW is a wastewater treatment plant located on Old Church Lane in Mountnessing, Brentwood, Essex, England. The facility serves a population of approximately 42,329, placing it in the medium agglomeration category under UK regulations. As a plant in the United Kingdom, SHENFIELD STW operates under the Urban Waste Water Treatment (England and Wales) Regulations, which transpose the EU Urban Waste Water Treatment Directive. For agglomerations of this size, secondary treatment is typically required, with more stringent treatment if discharging into sensitive areas. The treated effluent from SHENFIELD STW is likely discharged into a local watercourse that eventually drains into the River Thames or its tributaries, contributing to the Thames Basin. The downstream environment supports diverse aquatic life and is an important ecological corridor in the region.

SHENFIELD STW discharges into a local watercourse within the Thames Basin, which flows into the River Thames and ultimately the North Sea. The Thames estuary is a critical habitat for migratory fish and bird species, and the river supports a range of aquatic ecosystems. The plant's operations are subject to environmental regulations to protect these downstream waters.