KEYINGHAM STW - Secondary Wastewater Treatment Plant in Thorngumbald, England

KEYINGHAM STW is a wastewater treatment plant located near Thorngumbald in the East Riding of Yorkshire, England. It serves a population of approximately 2,400 people and operates under the UK's regulatory framework, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC) for secondary treatment standards. The plant provides secondary treatment, a standard level required for inland and coastal discharges under UK regulations. Its designed capacity is 2,474 m³/day, with an actual discharge volume of 534.55 m³/day, indicating operational headroom. The facility is situated within 10 km of the North Sea coast, making it subject to additional environmental scrutiny for nutrient removal. Treated effluent from KEYINGHAM STW likely discharges into local watercourses that drain into the Humber Estuary, a major ecological and economic asset. The Humber supports diverse birdlife, fish populations, and migratory species, and is a key part of the UK's coastal and estuarine environment. The plant's performance is critical to maintaining water quality in this sensitive region.

The plant's discharge ultimately reaches the Humber Estuary, a large tidal estuary on England's east coast that flows into the North Sea. The Humber supports important habitats for wading birds, fish, and invertebrates, and is a designated site for nature conservation. The estuary's health depends on controlling nutrient inputs from wastewater, making secondary treatment with potential nutrient removal essential for protecting downstream ecosystems.