Metheringham STW - Secondary Wastewater Treatment in North Kesteven, Lincolnshire

Metheringham STW (Sewage Treatment Works) is located on Moor Lane in Metheringham, North Kesteven, Lincolnshire, England. The plant serves a population of 4,225 and operates under secondary treatment, which is the standard biological treatment required for inland communities of this size in the United Kingdom. The plant's designed capacity is 4,225 population equivalent, with an average daily discharge volume of approximately 941 cubic meters. As a secondary treatment facility, it removes organic matter and suspended solids before discharging effluent. The plant is regulated under the UK's environmental permitting regime, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC) standards. The treated effluent from Metheringham STW is discharged into local watercourses that drain into the River Witham catchment, ultimately reaching The Wash, a large estuary and embayment on the east coast of England. The Wash supports important bird populations and is a designated site for nature conservation, making the plant's treatment performance crucial for protecting downstream aquatic habitats.

Metheringham STW discharges into the River Witham catchment, which flows into The Wash, a major estuary on England's east coast. The Wash supports diverse birdlife, including migratory waders and wildfowl, and is an important nursery ground for fish. The plant's secondary treatment helps reduce nutrient and organic loads, protecting the ecological balance of these downstream waters.