Overview
TREGARTH STW is a secondary treatment plant serving Bethesda, Wales. It discharges treated wastewater near the coast, with a population equivalent of 2,554 and a design capacity matching that figure.
TREGARTH STW is a wastewater treatment plant located near Bethesda in Gwynedd, Wales, United Kingdom. It serves a population of approximately 2,554 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated close to the coast, within 10 km of the sea, which influences its discharge requirements. The plant provides secondary treatment, which is the minimum standard required under the UWWTD for freshwater discharges from agglomerations of this size. The design capacity is 2,554 population equivalent, and the average daily discharge volume is 568.61 cubic meters. The treated effluent is discharged into the local watershed, which ultimately drains into the Irish Sea via the Menai Strait or nearby coastal waters. This area supports diverse marine life and is important for migratory fish species. The plant's operation helps protect the sensitive coastal environment from nutrient pollution and pathogens.
Environmental context
The plant discharges into the coastal waters of North Wales, which flow into the Irish Sea. This region supports important habitats for seabirds, marine mammals, and fish. The Menai Strait, a nearby tidal channel, is ecologically sensitive due to its strong currents and diverse benthic communities. Proper treatment is essential to prevent eutrophication and maintain water quality for tourism and fisheries.
Frequently asked questions
TREGARTH STW is located near Bethesda in Gwynedd, Wales, United Kingdom. The address is Dinas Farm Touring Park, Bryn Bella, Llanllechid, Bethesda, Gwynedd, LL57 3DL.
TREGARTH STW serves a population of approximately 2,554 people, classifying it as a small agglomeration under EU wastewater directives.
The plant provides secondary treatment and discharges treated effluent into the local watershed, which flows into the Irish Sea via coastal waters near the Menai Strait.
The plant protects the coastal waters of North Wales and the Irish Sea from pollution. While no specific river is named, the discharge ultimately reaches the sea, supporting marine ecosystems.
Under the EU UWWTD, plants serving agglomerations of 2,000-10,000 population equivalent must provide secondary treatment. TREGARTH STW meets this requirement, and as a coastal plant, it helps protect sensitive marine environments.
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