ARROYO DE SAN SERVAN Wastewater Treatment Plant - Arroyo de San Serván, Extremadura, Spain

ARROYO DE SAN SERVAN is a wastewater treatment plant located in Arroyo de San Serván, in the province of Badajoz, Extremadura, Spain. The facility serves a population of approximately 4,200 residents and is designed to handle up to 8,000 m³ of wastewater per day. As a secondary treatment plant, it provides biological treatment to reduce organic matter and suspended solids before discharge. The plant operates under Spain's implementation of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations with a population equivalent (PE) between 2,000 and 10,000. For this scale, secondary treatment is the standard requirement, ensuring compliance with European water quality standards. The designed capacity indicates adequate headroom for current population loads. The treated effluent is discharged into the local watershed, which ultimately drains into the Guadiana River basin. The Guadiana River flows westward through Extremadura and into the Gulf of Cádiz (Atlantic Ocean). The plant plays a key role in protecting the region's water resources, supporting agricultural irrigation and maintaining ecological balance in the surrounding semi-arid landscape.

The plant discharges into the Guadiana River basin, which flows through Extremadura and into the Atlantic Ocean via the Gulf of Cádiz. The Guadiana River supports diverse aquatic life and is an important water source for agriculture in the region. The plant's secondary treatment helps reduce nutrient loads, mitigating eutrophication risks in downstream reservoirs and coastal waters.