Haverford West STW, Haverfordwest

Overview

Haverford West STW serves 17,556 people in Pembrokeshire, Wales. The plant operates under the EU Urban Waste Water Treatment Directive, which requires secondary treatment for agglomerations of this size.

Haverford West STW is a wastewater treatment plant located in Haverfordwest, Pembrokeshire, Wales, United Kingdom. It serves a population of approximately 17,556 people, classifying it as a medium-sized agglomeration under the EU Urban Waste Water Treatment Directive (UWWTD). The plant is situated near the Cleddau estuary, which flows into the Celtic Sea. As a plant serving over 10,000 people, Haverford West STW is required by the UWWTD to provide secondary treatment as a minimum. The plant's designed capacity is 1.00 (likely in megaliters per day or similar units), indicating its scale. Welsh Water (Dŵr Cymru) is the likely operator, as the region's water and wastewater services are managed by this not-for-profit company. The plant's treated effluent discharges into the Western Cleddau River, which flows through Haverfordwest and into the Cleddau estuary, a Site of Special Scientific Interest (SSSI) known for its diverse birdlife and saltmarsh habitats. The estuary ultimately reaches the Celtic Sea, supporting local fisheries and marine ecosystems.

Environmental context

The plant discharges into the Western Cleddau River, which flows into the Cleddau estuary, a tidal inlet of the Celtic Sea. The estuary supports diverse aquatic life, including migratory fish and wading birds, and is ecologically sensitive due to its saltmarsh and mudflat habitats. Downstream, the Celtic Sea receives the treated effluent, contributing to the regional marine environment.

Frequently asked questions

Haverford West STW is located in Haverfordwest, Pembrokeshire, Wales, United Kingdom, near the Western Cleddau River.

The plant serves approximately 17,556 people, classifying it as a medium-sized agglomeration under the EU Urban Waste Water Treatment Directive.

Treated wastewater from Haverford West STW is discharged into the Western Cleddau River, which flows into the Cleddau estuary and then into the Celtic Sea.

As a UK plant in Wales, Haverford West STW operates under the EU Urban Waste Water Treatment Directive (transposed into UK law), which mandates secondary treatment for agglomerations over 10,000 people.

Plants of this scale in the UK typically provide secondary treatment as a minimum, often with additional nutrient removal if discharging into sensitive areas like estuaries.