Tidworth Garrison STW FE - Wastewater Treatment Plant in Tidworth, Wiltshire, England

Tidworth Garrison STW FE is a wastewater treatment plant located in Tidworth, Wiltshire, England, serving a population of around 12,850. The facility is situated at Humber Lane, Jellalabad Barracks, and supports the local community and military garrison. As a plant serving a medium-sized agglomeration, it is subject to the UK's Urban Waste Water Treatment Regulations, which transpose the EU Urban Waste Water Treatment Directive. These regulations require secondary treatment for discharges to freshwater and estuaries, with more stringent tertiary treatment in sensitive areas. The treated effluent from Tidworth Garrison STW FE is discharged into local watercourses that ultimately drain into the River Avon (Hampshire) and then to the English Channel. The River Avon supports diverse aquatic life and is an important chalk stream ecosystem, known for its high water quality and biodiversity.

The plant discharges into the River Avon (Hampshire) catchment, a chalk stream system that flows into the English Channel. Chalk streams are rare and ecologically sensitive habitats, supporting species such as brown trout, Atlantic salmon, and water crowfoot. The downstream environment includes the Solent, a major estuarine and coastal area important for bird migration and marine life.