Ruthin STW STW - Wastewater Treatment Plant in Ruthin, Denbighshire, Wales

Ruthin STW STW is a wastewater treatment works located in Ruthin, Denbighshire, Wales, serving a population of around 5,566. The plant is situated inland, more than 50 km from the coast, and operates within the regulatory framework of the United Kingdom. As a small agglomeration, the plant is subject to the Urban Waste Water Treatment (England and Wales) Regulations, which implement the EU Urban Waste Water Treatment Directive. These regulations require secondary treatment for inland discharges from populations over 2,000. The plant's designed capacity is 1.00 (likely in megalitres per day or similar unit), indicating it is sized for its served population. The treated effluent from Ruthin STW STW is discharged into a local watercourse, which ultimately drains into the River Clwyd and then into the Irish Sea. The plant plays a key role in protecting the water quality of the River Clwyd and downstream ecosystems, including estuarine and coastal habitats.

Ruthin STW STW discharges into the River Clwyd catchment, which flows northward through Denbighshire to the Irish Sea at Rhyl. The river supports diverse aquatic life, including salmonid fish species, and is an important migratory corridor. The plant's treatment helps maintain water quality standards in the river and its estuary, which are ecologically sensitive areas.