Maple Lodge Bucks STW - Major Wastewater Treatment Plant in Greater London, England

Maple Lodge Bucks STW is a major wastewater treatment facility located in the London Borough of Hillingdon, Greater London, England. It serves a population of around 499,000, classifying it as a large agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD), which the UK has retained post-Brexit. The plant is situated near Summerhouse Lane, close to the River Colne, a tributary of the River Thames. As a large treatment plant serving over 150,000 people, Maple Lodge Bucks STW is required to provide secondary treatment as a minimum under the UWWTD. Given its location in a sensitive area (the Thames catchment), tertiary treatment may also be expected to reduce nutrients like phosphorus and nitrogen. The regulatory framework ensures high standards of effluent quality. The treated wastewater from Maple Lodge Bucks STW is discharged into the River Colne, which flows into the River Thames. The Thames is a major river that passes through London and drains into the North Sea. The plant plays a crucial role in protecting the water quality of the Thames and its tributaries, supporting aquatic life and recreational use downstream.

Maple Lodge Bucks STW discharges into the River Colne, a tributary of the River Thames. The Thames basin is a densely populated and ecologically important catchment, supporting diverse fish populations, including salmon and eels, and providing habitat for waterfowl. The plant's effluent quality is critical to maintaining the health of the Colne and Thames ecosystems, particularly in the context of urban runoff and industrial inputs from the Greater London area.