Overview
ROMILLE wastewater treatment plant serves Romillé, Bretagne, France, with advanced treatment for a population of 2,410. It discharges 429.94 m³/day and has a designed capacity of 2,500 m³/day.
ROMILLE is a wastewater treatment plant located in Romillé, a commune in the Ille-et-Vilaine department of Brittany, France. The plant serves a population of approximately 2,410 residents and is situated in a rural setting within the Rennes metropolitan area. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 2,500 m³/day and an average discharge volume of 429.94 m³/day, the facility operates well within its capacity. As a French plant, it operates under the national regulations transposing the EU Urban Waste Water Treatment Directive (91/271/EEC), which mandates appropriate treatment levels based on the sensitivity of receiving waters. The treated effluent is discharged into local watercourses that ultimately drain into the English Channel via the Rance or Vilaine river basins. The plant plays a key role in protecting the region's water quality, supporting aquatic ecosystems, and contributing to the overall health of the Brittany watershed.
Environmental context
The plant discharges into small streams in the Ille-et-Vilaine department, which flow into the Rance or Vilaine rivers and eventually reach the English Channel. The region's watershed supports diverse aquatic life and is important for migratory fish species. Advanced treatment helps minimize nutrient loading, protecting downstream estuarine and coastal environments from eutrophication.
Frequently asked questions
The ROMILLE plant is located at D 68, Vaunoise, Romillé, in the Ille-et-Vilaine department of Brittany, France, near Rennes.
The plant serves a population of approximately 2,410 residents in Romillé and surrounding areas.
The plant uses advanced treatment processes, which include nutrient removal beyond secondary treatment, to ensure high-quality effluent before discharge.
The plant discharges into local streams that feed into the Rance or Vilaine rivers, ultimately flowing to the English Channel, helping protect these water bodies from pollution.
As a French plant, ROMILLE complies with the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires advanced treatment for sensitive areas. For small agglomerations like Romillé, secondary treatment is standard, but the plant exceeds requirements with advanced treatment.
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