Totton Marchwood Hythe Cadnam STW - New Forest, Hampshire Wastewater Treatment Plant

Totton Marchwood Hythe Cadnam STW is a wastewater treatment plant located in Marchwood, within the New Forest district of Hampshire, England. It serves a population of around 75,000, covering the communities of Totton, Marchwood, Hythe, and Cadnam. The facility is situated near the coast, within 50 km of the shoreline, and plays a key role in managing wastewater from this mixed urban and rural area. The plant's designed capacity is 1. And it operates under the UK's wastewater regulatory framework, which transposes the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (over 50,000 population equivalent), the directive requires secondary treatment as a minimum, with tertiary treatment in sensitive areas. It is expected to meet these standards. Treated effluent from the plant is discharged into local watercourses that drain into Southampton Water, a major estuary on the south coast of England. This estuary supports diverse aquatic life and is an important migratory corridor for fish. The plant's performance is critical to protecting the water quality of the Solent and the wider English Channel ecosystem.

The plant discharges into local streams that flow into Southampton Water, a tidal estuary connecting to the Solent and ultimately the English Channel. This estuarine environment supports diverse aquatic habitats, including salt marshes and mudflats, and is a key area for bird migration and fish spawning. The New Forest area is ecologically sensitive, with heathlands and wetlands that rely on clean water.