EL TIEMBLO Wastewater Treatment Plant, Cebreros, Castilla y León, Spain

EL TIEMBLO is a wastewater treatment plant located near Cebreros in the province of Ávila, Castilla y León, Spain. It serves a population equivalent of 14,500, classifying it as a medium-sized agglomeration under EU regulations. The plant is situated inland, away from coastal areas, and its treated effluent likely discharges into local watercourses that eventually feed into the Tagus River basin. As a Spanish facility serving over 10,000 people, EL TIEMBLO is subject to the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment as a minimum standard for such agglomerations. The directive also mandates more advanced treatment if the receiving waters are designated as sensitive areas. The plant is expected to meet these regulatory requirements to protect water quality. The plant's discharge contributes to the local hydrological network, which drains into the Tagus River and ultimately reaches the Atlantic Ocean near Lisbon. The region's water bodies support diverse aquatic life and are important for agriculture and drinking water supply. Proper treatment at EL TIEMBLO helps maintain the ecological health of these downstream environments.

The plant's treated wastewater likely enters local streams that flow into the Alberche River, a tributary of the Tagus River. The Tagus is one of the Iberian Peninsula's major rivers, supporting diverse ecosystems and providing water for irrigation and human consumption. Downstream, the river reaches the Tagus Estuary in Portugal, a vital wetland for migratory birds and fish species. The plant's operation helps protect these water bodies from nutrient pollution and pathogens.