FFAIRFACH WWTW Ffairfach Carms STW - Llandeilo, Wales Wastewater Treatment Plant

FFAIRFACH WWTW (Wastewater Treatment Works) is located in Dyffryn Cennen near Llandeilo, Carmarthenshire, Wales. The plant serves a population of approximately 2,895 people and operates under the regulatory framework of the United Kingdom, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC) through national legislation. As a secondary treatment facility, it provides biological treatment to reduce organic matter and suspended solids before discharge. The plant has a designed capacity of 3,472 m³/day and currently discharges an average of 644.53 m³/day of treated effluent. Secondary treatment typically involves biological processes such as activated sludge or trickling filters. The plant's scale places it in the small agglomeration category under EU classification, which requires secondary treatment as a minimum standard. The treated effluent is discharged into the local water environment, likely the River Cennen or a tributary of the River Towy (Tywi), which flows into Carmarthen Bay and the Bristol Channel. This river system supports diverse aquatic life and is an important migratory corridor for salmon and sea trout. The plant's operation helps protect the water quality of the Towy catchment, a designated Special Area of Conservation (SAC) for its river habitats and species.

The plant discharges into the River Cennen, a tributary of the River Towy (Tywi), which flows south through Carmarthenshire into Carmarthen Bay and the Bristol Channel. The Towy catchment is ecologically sensitive, supporting Atlantic salmon, sea trout, and European eel, and is designated as a Special Area of Conservation (SAC) for its river habitats. The secondary treatment provided by the plant helps reduce nutrient and organic pollution, protecting downstream water quality and aquatic ecosystems.