MOBBERLEY STW | Secondary Wastewater Treatment in Mobberley, England

MOBBERLEY STW is a municipal wastewater treatment plant located on Marion Drive in Mobberley, Cheshire East, England. The facility serves a population of approximately 2,861 people, placing it in the small agglomeration category under UK and EU regulatory frameworks. The plant provides secondary treatment, which is the minimum standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland freshwater discharges from agglomerations of this size. The plant has a designed capacity of 2,980 m³/day and currently discharges 636.96 m³/day of treated wastewater, indicating significant spare capacity. The treated effluent from MOBBERLEY STW is discharged into local watercourses that ultimately drain into the River Bollin, a tributary of the River Mersey. The Mersey flows into the Irish Sea via the Mersey Estuary, which supports diverse aquatic life and is an important ecological corridor for migratory fish species.

MOBBERLEY STW discharges into the River Bollin catchment, which flows into the River Mersey and then the Mersey Estuary, a major coastal inlet of the Irish Sea. The estuary supports diverse aquatic life, including salmon and sea trout, and is an important habitat for wading birds. The plant's secondary treatment helps protect water quality in this ecologically sensitive downstream environment.