Environmental Group Warns Perfect Day Project Would Dump Feces and Urine Into Mahahual’s Mangroves and Reefs

Aerial view of mangroves and turquoise waters near Mahahual, Quintana Roo

Mahahual, Quintana Roo — Environmental group Sélvame MX has warned that Royal Caribbean’s proposed Perfect Day project would generate a massive daily load of human waste that, if approved, would contaminate the mangroves and coral reefs of this coastal community.

“The feces and urine of 21,000 daily visitors is what Perfect Day will leave for Mahahual’s mangroves and reef,” the organization said Monday, as controversy swirls around the project still under review by the federal Environment Ministry (Semarnat).

The group accused all three levels of government of hypocrisy, saying they “attack existing parks and demonize them, but their eyes light up at the prospect of a few coins and they are willing to continue destroying biocultural heritage.”

Sélvame MX also criticized how the environmental sanitation tax charged to tourists is spent. “The governments don’t care about the residents of Mahahual or any other community in Quintana Roo. If they did, they would use the taxes collected from tourists for environmental sanitation to properly operate the wastewater treatment plant that currently overflows into the sea in this town,” the group said.

The organization asserted that no wastewater treatment meeting official standards would produce water of the quality the reef requires. “The standard is designed to allow pollution,” it warned.

“No to the feces and urine of 21,000 daily visitors in Mahahual. No to the chemicals from their pools. No to the fats and oils from their restaurants,” the group concluded.

The statement comes after President Claudia Sheinbaum reiterated Monday that Semarnat is analyzing the Perfect Day megaproject. She said the government is investigating the potential impact to decide whether to grant a construction permit or seek an alternative.

A citizen petition to stop the project on Change.org has surpassed 2 million signatures since it was launched in late July 2025.

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By Ana Reyes

Ana Reyes covers environmental policy, conservation initiatives, infrastructure projects, and political developments across the Yucatán Peninsula for Riviera Maya News & Events. She reports on issues from sargassum management and reef conservation to the Maya Train, coastal development, and state and federal policy affecting Quintana Roo and the broader peninsula.Ana has covered environmental and political news since 2023, tracking key developments in Mexico's environmental regulations, coral reef protection, coastal zone management, and the intersection of tourism development with conservation efforts. Her reporting spans from Cancun's hotel zone to the Sian Ka'an Biosphere Reserve and the culturally significant regions of the Yucatán interior.Ana is fluent in English and Spanish, and draws from a wide range of sources including government environmental agencies, conservation organizations, academic researchers, and local community leaders to provide balanced, well-sourced coverage. She is particularly focused on how environmental policy decisions affect the daily lives of residents and the long-term sustainability of the region.For story tips: ana@rivieramayanews.mx