Overview
WIGAN HOSCAR STW serves approximately 375,749 people in West Lancashire, England. The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive.
WIGAN HOSCAR STW is a major wastewater treatment facility located in Hoscar, near West Lancashire, Lancashire, England. Serving a population of around 375,749, it is classified as a large agglomeration under the Urban Waste Water Treatment Directive (UWWTD). The plant is part of the United Kingdom's wastewater infrastructure, managed by the relevant water authority. As a large treatment plant, it is expected to provide at least secondary treatment, with tertiary treatment likely required due to the sensitive nature of the receiving environment. The UK's regulatory framework, derived from the EU UWWTD, mandates advanced treatment for discharges into sensitive areas. The plant's designed capacity is 1.00 (likely in megalitres per day or similar unit), indicating a substantial facility. The treated effluent is discharged into local watercourses that eventually drain into the Irish Sea via the River Douglas or the Ribble Estuary. The plant plays a critical role in protecting the ecological health of these water bodies and the wider marine environment. Its location in a densely populated region underscores its importance for public health and environmental quality.
Environmental context
The plant's discharge likely enters the River Douglas or a tributary, which flows into the Ribble Estuary and then the Irish Sea. This estuarine and coastal environment supports diverse aquatic life, including migratory fish and bird populations. The region is ecologically sensitive, requiring high treatment standards to prevent nutrient enrichment and protect downstream habitats.
Frequently asked questions
WIGAN HOSCAR STW is located in Hoscar, near West Lancashire, Lancashire, England, United Kingdom.
The plant serves approximately 375,749 people, classifying it as a large agglomeration under the Urban Waste Water Treatment Directive.
The treated effluent is discharged into local watercourses that drain into the Ribble Estuary and ultimately the Irish Sea.
The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for large agglomerations and tertiary treatment in sensitive areas.
For a plant of this size in the UK, at least secondary treatment is mandatory, with tertiary treatment often required to protect sensitive receiving waters like estuaries and coastal zones.
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