Overview
PALAZUELOS DE ERESMA wastewater treatment plant serves Segovia, Spain, treating wastewater for approximately 5,279 people. It operates under Spain's implementation of the EU Urban Waste Water Treatment Directive.
PALAZUELOS DE ERESMA is a wastewater treatment plant located near Segovia in the province of Castilla y León, Spain. The facility serves a population of approximately 5,279 people, classifying it as a small agglomeration under EU regulations. Its location in the central Iberian Peninsula places it within a continental Mediterranean climate zone, where water resources are seasonally stressed. As a Spanish plant, it operates under the national transposition of the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size (under 10,000 population equivalent), the directive requires appropriate treatment to meet receiving water quality objectives. The plant is expected to comply with secondary treatment standards or equivalent, depending on the sensitivity of the receiving environment. The plant discharges into the local watershed, which ultimately drains into the Duero River basin. The Duero River flows westward through Spain and Portugal, emptying into the Atlantic Ocean near Porto. This basin supports diverse aquatic ecosystems and is important for regional agriculture and water supply. The plant's operation contributes to protecting downstream water quality in this ecologically and economically significant river system.
Environmental context
The plant's treated effluent enters the local drainage network that feeds the Eresma River, a tributary of the Duero River. The Duero basin is one of the largest in the Iberian Peninsula, supporting irrigated agriculture, wetlands, and fish populations including barbel and nase species. Downstream, the river flows through Portugal to the Atlantic Ocean, where the estuary provides critical habitat for migratory birds and marine life. The region's continental climate with seasonal droughts makes effective wastewater treatment essential for maintaining river flows and water quality.
Frequently asked questions
The plant is located near Segovia, in the province of Castilla y León, Spain, along the Carretera de Palazuelos road.
The plant serves approximately 5,279 people, classifying it as a small agglomeration under EU wastewater treatment regulations.
The plant discharges treated effluent into the local drainage network, which flows into the Eresma River, a tributary of the Duero River basin.
As a Spanish plant, it operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), transposed into Spanish law. For agglomerations under 10,000 PE, appropriate treatment is required to meet water quality standards.
For small agglomerations in Spain, secondary treatment (biological treatment) is typically required, unless the receiving waters are designated as sensitive areas, which may necessitate tertiary treatment.
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