Overview
Isla Cristina wastewater treatment plant serves approximately 33,000 people in the Huelva province of Andalusia, Spain. It discharges treated effluent into the Atlantic coastal environment.
The Isla Cristina wastewater treatment plant is located in the municipality of Isla Cristina, in the province of Huelva, Andalusia, Spain. The plant serves a population of around 33,000, making it a medium-sized agglomeration under Spanish and EU regulations. It is situated near the coast, within 50 km of the Atlantic Ocean, and its operations are subject to Spanish national water law and the EU Urban Waste Water Treatment Directive (91/271/EEC). As a plant serving over 10,000 population equivalent, it is required to meet secondary treatment standards under the EU directive. The plant's operational status and permit information are not disclosed in public records, but it is expected to operate under a permit from the regional water authority (Confederación Hidrográfica del Guadalquivir or similar). The plant discharges treated wastewater into the Atlantic Ocean via the coastal waters near Isla Cristina. The area is part of the Gulf of Cádiz, a productive marine ecosystem supporting fisheries and migratory bird populations. The receiving waters are influenced by tidal flows and the nearby Guadiana River estuary, which provides important nursery habitats for marine species. Proper treatment is essential to protect water quality and the ecological health of this coastal zone.
Environmental context
The plant discharges into the Atlantic Ocean near the Gulf of Cádiz, a region known for its rich marine biodiversity and important fisheries. The coastal waters receive inputs from the Guadiana River estuary, which supports migratory birds and serves as a nursery for fish and shellfish. Effective wastewater treatment is critical to prevent nutrient enrichment and maintain the ecological balance of this sensitive coastal environment.
Frequently asked questions
The Isla Cristina wastewater treatment plant is located in the municipality of Isla Cristina, in the province of Huelva, Andalusia, Spain, near the Atlantic coast.
The plant serves approximately 33,000 people, classifying it as a medium-sized agglomeration under EU regulations.
The plant discharges treated effluent into the Atlantic Ocean, near the Gulf of Cádiz, which is influenced by tidal flows and the nearby Guadiana River estuary.
The plant operates under the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size, and is subject to Spanish national water law.
Under the EU Urban Waste Water Treatment Directive, plants serving over 10,000 population equivalent must provide at least secondary treatment, with possible additional nutrient removal if discharging to sensitive areas.
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