Macclesfield STW - Wastewater Treatment Plant in Prestbury, Cheshire East, England

Macclesfield STW is a wastewater treatment works located near Prestbury in Cheshire East, England, serving a population of around 74,433. The facility is part of the United Kingdom's wastewater infrastructure, managed under the regulatory oversight of the Environment Agency and the UK water industry framework. As a medium-to-large agglomeration, the plant is expected to provide at least secondary treatment in line with the Urban Waste Water Treatment Directive (91/271/EEC), which is transposed into UK law. The plant's scale suggests it meets the required standards for its population equivalent. The treated effluent from Macclesfield STW discharges into local watercourses that drain into the River Bollin, a tributary of the River Mersey. The River Mersey flows into the Mersey Estuary and eventually the Irish Sea. The plant plays a key role in protecting the water quality of the Bollin catchment, which supports diverse aquatic life and recreational uses.

Macclesfield STW discharges into the River Bollin catchment, which flows into the River Mersey and then the Mersey Estuary, a major tidal estuary on the northwest coast of England. The estuary supports important bird populations and migratory fish species. The plant's operations help maintain water quality in the Bollin, a river that flows through the Cheshire Plain and provides habitat for brown trout and other freshwater species.