DRONFIELD STW - Wastewater Treatment Plant in North East Derbyshire, England

DRONFIELD STW is a wastewater treatment plant located in North East Derbyshire, England, serving the communities of Dronfield and Unstone Green. With a population equivalent of around 25,716, it falls under the medium agglomeration category under UK regulations. The plant is situated in the East Midlands region, an area characterized by mixed urban and rural landscapes. As a UK wastewater facility, DRONFIELD STW operates under the Water Industry Act 1991 and is regulated by the Environment Agency. For agglomerations of this size, secondary treatment is typically required, with tertiary treatment expected in sensitive areas. The plant's discharge is subject to environmental permits that set limits on biochemical oxygen demand, suspended solids, and other parameters to protect receiving waters. The treated effluent from DRONFIELD STW is discharged into local rivers that drain into the North Sea via the Humber Estuary. The surrounding catchment supports diverse aquatic life and is important for regional water quality. The plant plays a key role in maintaining the ecological health of the River Rother and its tributaries, which flow through the Peak District and into the Trent basin.

DRONFIELD STW discharges into the River Rother catchment, which flows into the River Don and eventually the Humber Estuary, a major North Sea inlet. The Humber Estuary supports important bird populations and fish species, making nutrient management critical. The plant's location in the East Midlands means its effluent contributes to the overall water quality of the Trent basin, which is monitored under the EU Water Framework Directive (now retained UK law).