Clay Cross STW - Secondary Wastewater Treatment in North East Derbyshire, England

Clay Cross STW (Sewage Treatment Works) is located in North East Derbyshire, Derbyshire, England, serving a population of around 3,090. The plant operates under the regulatory framework of the UK Environment Agency, which enforces standards aligned with the EU Urban Waste Water Treatment Directive (91/271/EEC) for secondary treatment. The plant provides secondary treatment, a standard biological process that reduces organic matter and suspended solids. With a designed capacity of 5,500 cubic meters per day and an average discharge volume of 687.94 cubic meters per day, the facility operates well below its capacity, indicating room for future growth or seasonal variations. Treated effluent from Clay Cross STW is discharged into local streams that feed into the River Rother, a tributary of the River Don, which ultimately flows into the Humber Estuary and the North Sea. The plant plays a key role in protecting the water quality of these rivers, supporting aquatic life and downstream ecosystems.

Clay Cross STW discharges into local watercourses that drain into the River Rother, a tributary of the River Don. The Don flows into the Humber Estuary, a major ecological zone supporting diverse bird populations and fish species. The plant's secondary treatment helps reduce nutrient and organic pollution, protecting the sensitive downstream environment of the Humber Estuary and North Sea.