Overview
HALSTEAD STW serves Braintree, England, treating wastewater for approximately 13,375 people. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
HALSTEAD STW is a wastewater treatment plant located near Braintree in Essex, England. It serves a population of approximately 13,375, placing it in the medium agglomeration category under UK regulations. The plant is situated inland, away from coastal areas, and discharges into local watercourses that eventually drain into the North Sea. As a plant serving over 10,000 people, HALSTEAD STW is required to meet secondary treatment standards under the Urban Waste Water Treatment Directive (91/271/EEC), which is transposed into UK law. The designed capacity is 1.00 (likely in megalitres per day or similar unit), indicating the plant's scale. Typical UK plants of this size employ activated sludge or biological filtration systems to achieve the required effluent quality. The treated effluent from HALSTEAD STW is discharged into the River Colne or its tributaries, which flow through the Essex countryside and eventually reach the North Sea via the Colne Estuary. This watercourse supports diverse aquatic life and is part of a broader catchment that includes agricultural and semi-urban areas. The plant plays a key role in protecting local water quality and downstream ecosystems.
Environmental context
HALSTEAD STW discharges into the River Colne catchment, which flows through Essex and into the Colne Estuary, ultimately reaching the North Sea. The river supports a variety of freshwater species and is an important habitat for birds and aquatic plants. The estuary is a designated Site of Special Scientific Interest (SSSI) for its bird populations and saltmarsh habitats, though the plant's discharge is regulated to minimize ecological impact.
Frequently asked questions
HALSTEAD STW is located near Braintree in Essex, England, at Elm's Hall Road, Colne Engaine. It serves the surrounding area including Halstead and parts of Braintree.
HALSTEAD STW serves approximately 13,375 people, classifying it as a medium-sized agglomeration under UK wastewater regulations.
The treated effluent from HALSTEAD STW is discharged into the River Colne catchment, which flows through Essex and into the Colne Estuary, eventually reaching the North Sea.
HALSTEAD STW operates under the UK's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for plants serving over 10,000 people.
For plants of this scale in the UK, typical treatment includes primary settlement followed by secondary biological treatment, such as activated sludge or trickling filters, to meet consent standards for biochemical oxygen demand and suspended solids.
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