Overview
Ballater STW is a secondary treatment plant serving approximately 4,400 people in Tullich, Aberdeenshire, Scotland. It discharges treated wastewater into the local catchment of the River Dee, a protected salmon river.
Ballater STW (Sewage Treatment Works) is a municipal wastewater facility located near Tullich in Aberdeenshire, Scotland, within the historic county of Alba. The plant serves a population of around 4,388 and is part of the region's wastewater infrastructure managed under Scottish Water. Its location in the scenic Dee Valley places it in a rural, upland setting. The plant provides secondary treatment, which is the standard biological treatment required under the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. The directive mandates secondary treatment for populations between 2,000 and 10,000 in freshwater catchments. Ballater STW has a designed capacity of 3,030 cubic meters per day and currently discharges an average volume of 977 cubic meters per day, indicating operational headroom. The treated effluent from Ballater STW ultimately enters the River Dee, a major river in Aberdeenshire that flows eastward to the North Sea at Aberdeen. The River Dee is renowned for its salmon fishing and supports a diverse aquatic ecosystem. The plant's discharge is regulated to protect the river's water quality, which is critical for both ecological health and local tourism.
Environmental context
Ballater STW discharges into the River Dee catchment, which flows through the Cairngorms National Park and into the North Sea at Aberdeen. The River Dee is a designated salmonid river and supports populations of Atlantic salmon, sea trout, and freshwater pearl mussels. The plant's secondary treatment helps maintain water quality in this ecologically sensitive river system, which is important for both biodiversity and local recreation.
Frequently asked questions
Ballater STW is located near Tullich in Aberdeenshire, Scotland, along the A93 road in the Dee Valley. It serves the Ballater area and surrounding communities.
Ballater STW serves approximately 4,388 people, classifying it as a small to medium agglomeration under EU wastewater treatment directives.
Ballater STW discharges treated effluent into the River Dee catchment, which flows eastward to the North Sea. The plant provides secondary treatment before discharge.
Ballater STW protects the River Dee, a major salmon river in Aberdeenshire that supports diverse aquatic life and is important for fishing and tourism.
Ballater STW operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into UK law. For its population size, secondary treatment is required. Scottish Water manages the plant to meet discharge standards.
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