Carterton Carterton Oxon STW - Wastewater Treatment Plant in West Oxfordshire, England

Carterton Carterton Oxon STW is a wastewater treatment plant located on Burford Road in Black Bourton, West Oxfordshire, Oxfordshire, England. It serves a population of around 15,500 residents in the Carterton area, operating as part of the region's municipal wastewater infrastructure. Under the EU Urban Waste Water Treatment Directive (91/271/EEC), plants serving agglomerations between 10,000 and 150,000 population equivalent are required to provide secondary treatment as a minimum. As a plant in this population tier, it is expected to meet secondary treatment standards, with potential for tertiary treatment if discharging into sensitive areas. The plant's treated effluent enters local watercourses that ultimately drain into the River Thames, which flows through southern England into the North Sea. The Thames basin supports diverse aquatic ecosystems and is a critical water resource for the region, making effective wastewater treatment essential for protecting water quality and biodiversity.

The plant discharges into local streams that feed into the River Thames, which flows eastward through Oxfordshire and London before reaching the North Sea. The Thames basin is ecologically significant, supporting fish populations such as salmon and eels, as well as diverse birdlife. Effective treatment helps maintain water quality in this heavily utilized river system.