CARLTON and REDMARSHALL STW - Secondary Wastewater Treatment in Redmarshall, England

CARLTON and REDMARSHALL STW is a wastewater treatment plant located in Redmarshall, a village in the Stockton-on-Tees district of Tees Valley, England. The plant serves a population equivalent of 2,294, classifying it as a small agglomeration under UK and EU regulatory frameworks. The plant provides secondary treatment, which is the standard level required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland freshwater discharges from agglomerations of this size. The designed capacity of 2,294 population equivalent aligns with the population served, indicating adequate sizing. The plant discharges an average of 510.72 m³ of treated effluent per day. The treated effluent from CARLTON and REDMARSHALL STW is discharged into a local watercourse that ultimately drains into the River Tees and then into the North Sea. The River Tees estuary supports diverse aquatic life and is an important habitat for migratory birds. The plant's operation helps protect downstream water quality in this ecologically sensitive region.

The plant discharges into a tributary of the River Tees, which flows through Tees Valley and into the North Sea at Teesmouth. The Tees estuary is a vital habitat for wading birds and supports a range of fish species. The secondary treatment provided by the plant reduces organic pollutants and suspended solids, helping to maintain the ecological health of the river and its downstream environment.