Cozumel plant accused of dumping sewage into mangroves

Aerial view of the San Miguelito wastewater treatment plant in Cozumel, surrounded by mangroves

Cozumel, Quintana Roo — The environmental group Sélvame MX has accused the San Miguelito wastewater treatment plant of discharging raw sewage into the island’s mangroves, contaminating Laguna Ciega and the surrounding reef system.

In a statement posted on social media, the organization said that a walk along the pier connecting to Isla de la Pasión revealed a strong, foul odor of sewage, large pools of green water, and areas of dead mangrove. The group also reported a whitish layer floating on the water, possibly grease or oil.

“Our senses do not deceive us: a fetid, penetrating smell of sewage fills the air,” the group said in a video accompanying the statement. “The image at the pier is overwhelming — water with a strong sewage odor and wide areas with a whitish layer floating, possibly grease or oil.”

Sélvame MX called on citizens to speak out against the alleged pollution. “Let us not allow this to continue. For a living Cozumel, raise your voice!” the group urged.

The San Miguelito plant is the island’s main wastewater treatment facility, responsible for treating sewage to protect public health and the fragile reef ecosystem. It began operations on March 26, 2013. Last year, the state government announced an expansion to double its capacity from 110 to 230 liters per second.


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By Ana Reyes

Ana Reyes reports on environmental policy, conservation, infrastructure, and politics across the Yucatán Peninsula. She tracks developments from mangrove protections and sargassum management to mega-projects and legislative changes, providing English-speaking readers with a clear view of how policy shapes life in Quintana Roo.

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