ST DENNIS STW - Secondary Wastewater Treatment Plant in Indian Queens, Cornwall

ST DENNIS STW is a wastewater treatment plant located in St. Enoder, near Indian Queens, Cornwall, England. It serves a population of 2,551 and operates under the regulatory framework of the United Kingdom, which implements the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this scale. The plant provides secondary treatment, a standard level for communities of this size, ensuring compliance with environmental standards. The plant has a designed capacity of 2,898 cubic meters per day and currently discharges 567.94 cubic meters per day. As a coastal facility within 10 km of the coast, it plays a critical role in protecting the marine environment. The UK's regulatory regime requires secondary treatment for discharges to coastal waters, with additional nutrient removal in sensitive areas. The treated effluent from ST DENNIS STW ultimately reaches the English Channel via local watercourses. Cornwall's coastal waters support diverse marine life, including important fish stocks and seabird populations. The plant's operation helps maintain water quality in the region, which is vital for both ecological health and local tourism.

ST DENNIS STW discharges treated wastewater into local watercourses that drain to the English Channel. The receiving waters are part of a coastal ecosystem that supports diverse marine life, including commercially important fish species and migratory birds. The plant's proximity to the coast necessitates careful management to prevent nutrient enrichment and protect sensitive habitats.