PEMBROKE STW - Pembroke Dock Wastewater Treatment Plant, Wales

PEMBROKE STW is a municipal wastewater treatment plant located in Pembroke Dock, Pembrokeshire, Wales. Serving a population of around 17,713, the facility is part of the region's essential water infrastructure, managed by Welsh Water (Dŵr Cymru). The plant is situated near the coast, reflecting the area's coastal geography. As a plant serving a medium-sized agglomeration, PEMBROKE STW is expected to meet secondary treatment standards under the UK's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC). The directive requires secondary treatment for populations over 2,000, with more stringent tertiary treatment in sensitive areas. The plant's designed capacity is 1.00 (likely in megalitres per day), indicating its scale. The treated effluent from PEMBROKE STW is discharged into local watercourses that flow into Milford Haven, a deep-water estuary and important ecological site. The estuary supports diverse marine life, including fish, birds, and seals, and is a key area for conservation. The plant's operation helps protect the water quality of this sensitive coastal environment.

PEMBROKE STW discharges treated wastewater into the Milford Haven estuary, which connects to the Celtic Sea and ultimately the Atlantic Ocean. The estuary is a Site of Special Scientific Interest (SSSI) and supports rich biodiversity, including migratory fish and seabird colonies. The plant's treatment processes help maintain water quality in this ecologically sensitive coastal environment.