GREENFIELD STW - Greenfield, Wales Wastewater Treatment Plant

GREENFIELD STW is a wastewater treatment plant located in Greenfield, Flintshire, Wales, serving a population of around 15,140. The facility is situated near the coast of the Dee Estuary, an ecologically important area. As a UK wastewater treatment plant, it operates under the Water Industry Act 1991 and is regulated by Natural Resources Wales, ensuring compliance with environmental standards. For a population of this scale, typical UK plants employ secondary treatment (biological treatment) followed by tertiary polishing where required, especially in sensitive coastal areas. The plant likely meets the standards set by the Urban Waste Water Treatment (England and Wales) Regulations 1994, which transpose the EU Urban Waste Water Treatment Directive. The treated effluent from GREENFIELD STW is discharged into the Dee Estuary, which flows into the Irish Sea. The Dee Estuary is a site of special scientific interest (SSSI) and supports diverse birdlife and marine habitats. The plant plays a key role in protecting this sensitive coastal ecosystem from nutrient pollution and pathogens.

GREENFIELD STW discharges into the Dee Estuary, a major coastal inlet in northeast Wales that drains into the Irish Sea. The estuary is a vital habitat for migratory birds, fish, and invertebrates, and is designated as a Site of Special Scientific Interest (SSSI) for its ecological importance. The plant's operations help maintain water quality in this sensitive marine environment, supporting both biodiversity and local recreational uses.