Overview
NAUT ARAN wastewater treatment plant serves Arties in Naut Aran, Val d'Aran, Catalunya, Spain. It treats wastewater from a population of 1,749 under EU regulations.
NAUT ARAN is a wastewater treatment plant located in Arties, within the municipality of Naut Aran, in the Val d'Aran region of Catalunya, Spain. The facility serves a population of approximately 1,749 residents, making it a small-scale treatment plant in a mountainous area of the Pyrenees. As a Spanish plant, NAUT ARAN operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for agglomerations of this size (under 10,000 population equivalent) unless discharging into sensitive areas. Typical small plants in this region use biological treatment systems adapted to seasonal tourist flows. The plant discharges into local watercourses that feed into the Garona River (Garonne), which flows north into France and ultimately reaches the Atlantic Ocean via the Gironde estuary. The Val d'Aran is a high-altitude valley with sensitive alpine ecosystems, and the plant's operations are critical for protecting downstream water quality in the Garona basin.
Environmental context
NAUT ARAN discharges into tributaries of the Garona River (Garonne), which flows from the Pyrenees through France to the Atlantic Ocean. The Val d'Aran is a high-altitude watershed with sensitive alpine ecosystems, including cold-water fish species and unique riparian habitats. The plant's location in a mountainous region means that treated effluent must meet strict standards to protect downstream water quality and biodiversity.
Frequently asked questions
NAUT ARAN is located in Arties, within the municipality of Naut Aran, in the Val d'Aran region of Catalunya, Spain. The address is C-28, Arties, Naut Aran, Val d'Aran, Catalunya, 25539.
The plant serves a population of approximately 1,749 residents. This classifies it as a small agglomeration under the EU Urban Waste Water Treatment Directive.
The plant discharges treated effluent into local watercourses that feed into the Garona River (Garonne), which flows north into France and eventually reaches the Atlantic Ocean via the Gironde estuary.
NAUT ARAN protects the Garona River basin, including its tributaries in the Val d'Aran. The Garona is a major river that flows through Spain and France, supporting diverse aquatic ecosystems.
As a Spanish plant serving fewer than 10,000 people, NAUT ARAN operates under the EU Urban Waste Water Treatment Directive 91/271/EEC, which requires secondary treatment for such agglomerations unless discharging into sensitive areas. The plant must comply with national transposition of the directive.
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