MANBY STW - Secondary Wastewater Treatment Plant in East Lindsey, Lincolnshire

MANBY STW is a wastewater treatment plant located in the East Lindsey district of Lincolnshire, England, near the village of Great Carlton. The plant serves a population of approximately 2,113 and operates under the regulatory framework of the United Kingdom, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC) through the Water Industry Act 1991. As a secondary treatment facility, it provides biological treatment to reduce organic matter and suspended solids before discharge. The plant has a designed capacity of 5,456 cubic meters per day and currently treats an average daily flow of 470.43 cubic meters, indicating significant spare capacity. The treatment process is typical for small agglomerations in the UK, where secondary treatment is the standard for inland and coastal discharges to protect receiving waters. The treated effluent is discharged into the local water environment, which ultimately drains to the North Sea via the Lincolnshire coast. The area is ecologically sensitive, supporting diverse aquatic life and migratory bird populations in the coastal wetlands and estuaries. The plant plays a key role in maintaining water quality in this region, which is important for both biodiversity and recreational use.

MANBY STW discharges treated wastewater into local watercourses that flow toward the North Sea via the Lincolnshire coast. The receiving environment includes coastal wetlands and estuaries that support diverse aquatic life and serve as important habitats for migratory birds. The plant's secondary treatment helps reduce nutrient and organic loads, protecting the ecological balance of the downstream marine environment.