Overview
Ladock Valley STW is a secondary treatment plant in Tresillian, Cornwall, England, serving 4,330 people. It discharges 964 m³/day of treated wastewater near the coast.
Ladock Valley STW is a wastewater treatment plant located in Tresillian, Cornwall, England, serving a population of approximately 4,330. The plant is situated near the A390 road in the St. Clement area, within the county of Cornwall. It operates as a secondary treatment facility, which is the standard level required under the EU Urban Waste Water Treatment Directive for agglomerations of this size. The plant has a designed capacity of 4,682 m³/day and currently discharges an average of 964 m³/day of treated effluent. As a secondary treatment plant, it provides biological treatment to reduce organic matter and suspended solids. The facility is located within 10 km of the coast, indicating its discharge may influence coastal water quality. The treated effluent from Ladock Valley STW ultimately reaches the English Channel via local watercourses. The surrounding area includes the Fal and Helford Special Area of Conservation, which supports diverse aquatic life and is ecologically sensitive. The plant plays a key role in protecting these downstream environments from untreated sewage pollution.
Environmental context
Ladock Valley STW discharges treated wastewater into local streams that flow into the Fal River estuary and eventually the English Channel. The Fal and Helford estuary system is a designated site of ecological importance, supporting diverse habitats including saltmarsh, mudflats, and seagrass beds. The plant's coastal proximity means its effluent can affect marine water quality, making secondary treatment essential for protecting sensitive downstream ecosystems.
Frequently asked questions
Ladock Valley STW is located in Tresillian, Cornwall, England, near the A390 road in the St. Clement area. Its coordinates are approximately 50.273° N, -5.003° W.
The plant serves a population of 4,330 people, classifying it as a small agglomeration under EU wastewater treatment directives.
The plant discharges treated effluent at a rate of 964 m³/day into local watercourses that flow into the Fal River estuary and ultimately the English Channel.
Ladock Valley STW provides secondary treatment, which includes biological processes to reduce organic matter and suspended solids. This meets the standard required for its population size under UK regulations.
The plant operates under the UK's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates secondary treatment for agglomerations with a population equivalent over 2,000. Its coastal location may also require additional considerations for sensitive areas.
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