DUNNSWOOD STW - Castlecary, Scotland Wastewater Treatment Plant

DUNNSWOOD STW is a wastewater treatment plant located near Castlecary in North Lanarkshire, Scotland, United Kingdom. It serves a population of approximately 31,858 people, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated near the M80 motorway in the Wardpark area, within the Central Belt of Scotland. As a facility in the United Kingdom, DUNNSWOOD STW operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which has been retained in UK law post-Brexit. For agglomerations serving between 10,000 and 100,000 population equivalent, the directive requires secondary treatment as a minimum. The treated effluent from DUNNSWOOD STW is discharged into the local water environment, which ultimately drains into the River Forth catchment. The Forth River flows eastward into the Firth of Forth, a major estuary on Scotland's east coast. This estuary supports diverse aquatic life and is an important area for migratory fish species such as Atlantic salmon and sea trout.

DUNNSWOOD STW discharges into the River Forth catchment, which flows into the Firth of Forth estuary. The Firth of Forth is a large, ecologically sensitive estuary that supports diverse aquatic life, including important fish populations and bird species. The plant's location inland, over 50 km from the coast, reduces direct marine impact, but its discharge contributes to the overall water quality of the Forth basin, which is subject to regulatory oversight under the Water Framework Directive.