Warwick Bridge and District STW Humus - Secondary Wastewater Treatment in Cumberland

Warwick Bridge and District STW Humus is a wastewater treatment plant located in Warwick Bridge, Cumberland, England. It serves a population of approximately 2,079 people, classifying it as a small agglomeration under UK and EU regulatory frameworks. The plant is situated near the A69 road in Wetheral, within the historic county of Cumberland. The plant provides secondary treatment, which is the standard level required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for inland freshwater discharges from agglomerations of this size. The designed capacity is 2,089 cubic meters per day, and the current discharge volume is 462.86 cubic meters per day, indicating operational headroom. As a UK facility, it operates under the Water Industry Act 1991 and is regulated by the Environment Agency. The treated effluent is discharged into a local watercourse that ultimately drains into the River Eden, a major river in Cumbria. The River Eden flows northwest through the Eden Valley and enters the Solway Firth, an estuary of the Irish Sea. The downstream environment supports diverse aquatic life, including salmon and otters, and the area is ecologically sensitive due to its designation as a Site of Special Scientific Interest (SSSI) along parts of the river.

The plant discharges into a tributary of the River Eden, which flows through the Eden Valley to the Solway Firth. The River Eden is a high-quality salmon river and supports a range of protected species, including Atlantic salmon, lamprey, and otter. The Solway Firth is an important estuary for migratory birds and marine life. The plant's secondary treatment helps protect these downstream ecosystems from nutrient pollution and organic loading.