Callander WWTW | Secondary Wastewater Treatment Plant in Callander, Scotland

Callander Wastewater Treatment Works (WWTW) serves the town of Callander in Stirling, Scotland, with a population equivalent of approximately 4,157. The plant provides secondary treatment, a standard level for small agglomerations under Scottish Water's management. It has a designed capacity of 4,500 cubic meters per day and an average daily discharge volume of around 925 cubic meters. As a Scottish wastewater facility, Callander WWTW operates under the Urban Waste Water Treatment (Scotland) Regulations 1994, which transpose the EU Urban Waste Water Treatment Directive. For a population of this size, secondary treatment is the required minimum. The plant is part of Scottish Water's public wastewater infrastructure, ensuring compliance with environmental standards. The treated effluent from Callander WWTW is discharged into a local watercourse that flows into the River Teith, a tributary of the River Forth. The River Forth ultimately drains into the Firth of Forth estuary on Scotland's east coast. This catchment supports diverse aquatic life and is important for migratory fish species such as Atlantic salmon and sea trout.

Callander WWTW discharges into the River Teith catchment, which flows into the River Forth and then the Firth of Forth estuary. The Firth of Forth is a major estuary supporting diverse habitats, including mudflats and saltmarshes, and is an important site for migratory birds and fish. The plant's secondary treatment helps protect water quality in this ecologically sensitive downstream environment.