LIDSEY STW Wastewater Treatment Plant, Arun, West Sussex

LIDSEY STW is a wastewater treatment plant located in Arun, West Sussex, England, serving a population of approximately 27,750. The plant is situated near the A29 road in Woodgate, within the district of Arun, and is part of the region's municipal wastewater infrastructure. As a plant serving a medium-sized agglomeration, LIDSEY STW is subject to the UK's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for discharges to freshwater and estuaries. The plant's designed capacity is 1.00 (likely in megaliters per day or equivalent units), indicating its scale of operation. The plant is located within 50 km of the coast, and its treated effluent ultimately discharges into the English Channel via local watercourses. The receiving water body supports diverse aquatic life and is part of the wider Sussex coastal catchment, which includes sensitive estuarine and marine environments.

LIDSEY STW discharges treated wastewater into local watercourses that flow into the English Channel, a major marine ecosystem supporting diverse fish, bird, and invertebrate populations. The plant's location within 50 km of the coast means its effluent can influence coastal water quality, particularly in the nearby Chichester Harbour and Pagham Harbour areas, which are ecologically sensitive and support migratory bird populations.