Doddington STW - Secondary Wastewater Treatment Plant in Fenland, Cambridgeshire

Doddington STW (Sewage Treatment Works) is a municipal wastewater facility located on Coneywood Road in Doddington, near Fenland, Cambridgeshire, England. The plant serves a population of approximately 3,720 and operates under secondary treatment, which is the standard biological treatment required for inland freshwater discharges under UK regulations. As a secondary treatment plant, Doddington STW uses biological processes to break down organic matter and reduce pollutants before discharge. The plant has a designed capacity of 3,720 population equivalent, matching the current population served, indicating it is operating at full design capacity. The facility is part of the UK's wastewater infrastructure regulated by the Environment Agency under the Water Industry Act 1991 and the Urban Waste Water Treatment (England and Wales) Regulations 1994. The treated effluent from Doddington STW is discharged into local watercourses that drain into the River Great Ouse, which flows through the Fens to The Wash, a large estuary and bay on the North Sea coast. The receiving waters support diverse aquatic life and are important for agriculture and flood management in the low-lying Fenland region. The plant's operation helps protect water quality in this ecologically sensitive area.

Doddington STW discharges into local ditches and drains that feed into the River Great Ouse, which flows through the Cambridgeshire Fens to The Wash, a major estuary on the North Sea coast. The Fens are a low-lying, agriculturally intensive region with a network of artificial drainage channels. The plant's secondary treatment helps reduce nutrient loads and organic pollution, protecting downstream aquatic habitats and supporting biodiversity in the Great Ouse catchment.