Overview
Chelmsford STW serves a population of 139,400 in Maldon, England, as part of the UK's wastewater infrastructure. The plant operates under the UK's regulatory framework derived from the EU Urban Waste Water Treatment Directive.
Chelmsford STW is a wastewater treatment plant located near Maldon in Essex, England, serving a population of approximately 139,400. The plant is situated inland but within 50 km of the coast, reflecting its role in managing wastewater from a medium-to-large agglomeration in the region. As a UK wastewater facility, Chelmsford STW operates under the Urban Waste Water Treatment (England and Wales) Regulations, which transpose the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size, secondary treatment is typically required, with tertiary treatment in sensitive areas. The plant's designed capacity is 1.00 (likely in megalitres per day or similar units), indicating its scale. The treated effluent from Chelmsford STW is discharged into local watercourses that ultimately drain into the Blackwater Estuary and the North Sea. The estuary supports diverse aquatic life and is an important area for migratory birds, making effective wastewater treatment essential for protecting downstream ecosystems.
Environmental context
Chelmsford STW discharges into the Blackwater Estuary, a tidal estuary that flows into the North Sea. The estuary supports diverse aquatic life, including fish, invertebrates, and migratory birds, and is ecologically sensitive due to its role as a habitat and nursery ground. Proper treatment helps maintain water quality in this coastal environment.
Frequently asked questions
Chelmsford STW is located near Maldon in Essex, England, within the Maldon district. The plant serves the Chelmsford area and surrounding communities.
Chelmsford STW serves a population of approximately 139,400, classifying it as a large agglomeration under the UK's wastewater regulations.
The treated effluent from Chelmsford STW is discharged into local watercourses that flow into the Blackwater Estuary, which ultimately reaches the North Sea.
Chelmsford STW operates under the Urban Waste Water Treatment (England and Wales) Regulations, which implement the EU Urban Waste Water Treatment Directive (91/271/EEC). This requires secondary treatment for agglomerations of this size.
For agglomerations of this scale in the UK, secondary treatment is standard, with tertiary treatment often required in sensitive areas such as estuaries or coastal zones to protect water quality.
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