Overview
STEP DU BRULE MARRON is a secondary treatment plant serving Cilaos, La Réunion, France. It treats wastewater for about 3,444 people with a designed capacity of 4,500 m³/day.
STEP DU BRULE MARRON is a municipal wastewater treatment plant located in Cilaos, a commune in the Saint-Pierre arrondissement of La Réunion, an overseas department of France. The plant serves a population of approximately 3,444 residents, reflecting a small agglomeration in the mountainous interior of the island. As a secondary treatment facility, the plant provides biological treatment to reduce organic matter and suspended solids. With a designed capacity of 4,500 cubic meters per day and a current discharge volume of 614.4 cubic meters per day, the plant operates well below its capacity. French wastewater treatment plants are regulated under national transposition of the EU Urban Waste Water Treatment Directive (91/271/EEC), which requires secondary treatment for agglomerations of this size. The plant discharges treated effluent into the local watershed, which ultimately drains into the Indian Ocean via the rivers of La Réunion's rugged terrain. The island's unique volcanic geology and high biodiversity make proper wastewater treatment essential for protecting downstream freshwater and marine ecosystems.
Environmental context
The plant is situated in the mountainous interior of La Réunion, a volcanic island in the Indian Ocean. Treated effluent flows into local streams that feed into the island's river systems, eventually reaching the ocean. The surrounding watershed supports diverse aquatic life and is part of a region known for its high endemism and ecological sensitivity. Proper treatment helps protect downstream coral reefs and coastal habitats from nutrient pollution.
Frequently asked questions
STEP DU BRULE MARRON is located in Cilaos, a commune in the Saint-Pierre arrondissement of La Réunion, an overseas department of France. The plant serves the local population in this mountainous interior region.
The plant serves approximately 3,444 people, classifying it as a small agglomeration under the EU Urban Waste Water Treatment Directive.
The plant provides secondary treatment, which includes biological processes to remove organic matter and suspended solids before discharge.
As a French plant, it operates under national regulations that transpose the EU Urban Waste Water Treatment Directive (91/271/EEC). For agglomerations of this size, secondary treatment is required, and the plant meets that standard.
The plant has a designed capacity of 4,500 cubic meters per day, with a current discharge volume of 614.4 cubic meters per day, indicating it operates well below its maximum capacity.
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