FAWLEY CALSHOT BLACKFIELD STW - New Forest Wastewater Treatment Plant, Hampshire, UK

FAWLEY CALSHOT BLACKFIELD STW is a wastewater treatment plant located in the New Forest district of Hampshire, England, near the disused Fawley Power Station. It serves a population of around 14,895, placing it in the medium agglomeration category under UK regulations. The plant is situated in a coastal area within 50 km of the coast, near the Solent and Southampton Water. As a UK wastewater treatment facility, it operates under the Urban Waste Water Treatment (England and Wales) Regulations 1994, which transpose the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size, secondary treatment is typically required, with additional nutrient removal if discharging into sensitive areas such as the Solent, which is designated as a sensitive area under the Nitrates Directive. The plant's treated effluent likely discharges into the Solent or Southampton Water, which are important estuarine and coastal ecosystems. These waters support diverse marine life, including fish, birds, and protected habitats. The New Forest area is ecologically sensitive, and the plant plays a role in protecting water quality in this region.

The plant discharges into the Solent, a major estuarine system that connects to the English Channel. The Solent supports diverse aquatic life, including seagrass beds and important bird populations. Downstream, the waters flow into the English Channel, a busy shipping lane and ecologically significant marine area. The region is subject to nutrient management regulations to prevent eutrophication.