Overview
Carmarthen STW serves approximately 20,285 people in Carmarthen, Wales. The plant operates under UK wastewater regulations, discharging treated effluent into the local catchment of the River Towy.
Carmarthen STW is a municipal wastewater treatment plant located in Carmarthen, Cymru / Wales, United Kingdom. It serves a population of around 20,285, placing it in the medium agglomeration category under UK and EU regulatory frameworks. As a plant of this scale, it is expected to provide secondary treatment as a minimum under the Urban Waste Water Treatment Directive (91/271/EEC), which is transposed into UK law. The plant's designed capacity is 1.00 (likely in megalitres per day or similar unit), indicating its operational scale. The treated effluent is discharged into the River Towy catchment, which flows into Carmarthen Bay and the Bristol Channel. This water body supports diverse aquatic life and is important for local fisheries and migratory fish species such as salmon and sea trout.
Environmental context
Carmarthen STW discharges into the River Towy catchment, which drains into Carmarthen Bay and ultimately the Bristol Channel. The River Towy is a designated salmonid river, supporting populations of Atlantic salmon and sea trout, and its estuary provides important habitat for wading birds and waterfowl. The plant's discharge must meet strict environmental quality standards to protect these sensitive ecosystems.
Frequently asked questions
Carmarthen STW is located at UWTSD Cynefin, Llansteffan Road, Carmarthen, Sir Gaerfyrddin / Carmarthenshire, Cymru / Wales, SA31 3NQ, United Kingdom.
Carmarthen STW serves approximately 20,285 people, classifying it as a medium-sized agglomeration under UK wastewater regulations.
The plant discharges treated effluent into the River Towy catchment, which flows into Carmarthen Bay and the Bristol Channel. The discharge is regulated to protect the river's sensitive ecosystem.
As a UK plant, Carmarthen STW operates under the Urban Waste Water Treatment Directive (91/271/EEC) transposed into UK law, which mandates secondary treatment for agglomerations of this size.
Plants serving around 20,000 people in the UK typically provide secondary treatment, which includes biological processes to reduce organic matter and suspended solids, meeting standards set by the Environment Agency.
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