LEYLAND STW - South Ribble, Lancashire Wastewater Treatment Plant

LEYLAND STW is a wastewater treatment plant located in South Ribble, Lancashire, England, serving a population of approximately 46,583. Situated in the North West of England, the plant is part of the region's municipal wastewater infrastructure managed under UK environmental regulations. And it operates under the UK's Urban Waste Water Treatment Regulations, which transpose the EU Urban Waste Water Treatment Directive. For agglomerations of this size (between 10,000 and 150,000 population equivalent), secondary treatment is typically required, with additional nutrient removal in sensitive areas. The treated effluent is discharged into local watercourses that ultimately drain into the River Ribble and then the Irish Sea. The Ribble estuary is an ecologically important area supporting diverse birdlife and aquatic habitats, and the plant's discharge is regulated to protect these downstream environments.

The plant discharges into the River Ribble catchment, which flows into the Ribble Estuary and then the Irish Sea. The estuary is a designated Site of Special Scientific Interest (SSSI) and supports important bird populations and fish species. The plant's operations are regulated to minimize nutrient and pollutant loads, protecting the ecological health of the estuary and coastal waters.