Overview
Piedrahita wastewater treatment plant in Piedrahíta, Castilla y León, Spain, serves a population of 3,444 with advanced treatment. It discharges 893.69 m³/day of treated water into the local watershed.
The Piedrahita wastewater treatment plant is located in the municipality of Piedrahíta, in the province of Ávila, Castilla y León, Spain. It serves a population of approximately 3,444 people, classifying it as a small agglomeration under Spanish and EU regulations. The plant employs advanced treatment processes, which go beyond the secondary treatment standard required by the EU Urban Waste Water Treatment Directive (91/271/EEC) for agglomerations of this size. Its designed capacity of 3,444 m³/day matches the population served, indicating a facility sized to handle the local load. The plant discharges an average of 893.69 m³/day of treated wastewater. The treated effluent is released into the local watershed, which ultimately drains into the Tormes River, a tributary of the Duero River. The Duero basin supports diverse aquatic life and is an important agricultural and ecological resource in the region. The advanced treatment helps protect downstream water quality and ecosystems.
Environmental context
The plant discharges into the Tormes River basin, which flows into the Duero River and eventually reaches the Atlantic Ocean near Porto, Portugal. The Duero basin is a major ecological corridor in the Iberian Peninsula, supporting fish species such as barbel and trout. Advanced treatment at this plant reduces nutrient loads, helping to prevent eutrophication in downstream reservoirs and coastal waters.
Frequently asked questions
The Piedrahita WWTP is located on CL-510 in Piedrahíta, Ávila, Castilla y León, Spain.
The plant serves a population of 3,444 people, classifying it as a small agglomeration under EU regulations.
The plant provides advanced treatment, which exceeds the secondary treatment standard required by the EU Urban Waste Water Treatment Directive for agglomerations of this size.
Under the EU UWWTD, agglomerations with a population equivalent above 2,000 must have at least secondary treatment. Piedrahita, serving 3,444 people, meets this requirement and goes further with advanced treatment, which is often required in sensitive areas to reduce nutrient pollution.
The treated effluent is discharged into the local watershed, which drains into the Tormes River, a tributary of the Duero River. The Duero basin is an important ecological and agricultural resource in Spain and Portugal.
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