Annan Kenziels STW - Wastewater Treatment Plant Serving Annan, Scotland

Annan Kenziels STW is a wastewater treatment plant serving the town of Annan in Dumfries and Galloway, Scotland. The plant serves a population of around 13,145, classifying it as a medium-sized agglomeration under Scottish and UK regulations. As a UK facility, the plant operates under the Urban Waste Water Treatment (Scotland) Regulations 1994, which transpose the EU Urban Waste Water Treatment Directive. For a population of this scale, secondary treatment is typically required, with additional nutrient removal if discharging into sensitive areas like the Solway Firth. The plant's treated effluent ultimately reaches the Solway Firth, an important estuary and coastal ecosystem. The Solway Firth supports diverse birdlife, fisheries, and intertidal habitats, making effective wastewater treatment crucial for maintaining water quality and ecological health in this sensitive coastal environment.

The plant discharges into local watercourses that flow into the Solway Firth, a large estuary on the west coast of Scotland. The Solway Firth is an ecologically significant area supporting migratory birds, salmon fisheries, and extensive intertidal mudflats. Its waters mix with the Irish Sea, contributing to the broader marine environment of the North Atlantic.