Cancun’s Aging Sewage System Strains Under Real Estate Boom, Threatening Lagoon and Reefs

Aerial view of Nichupté Lagoon in Cancun showing signs of pollution and urban development along the shoreline.

Cancun, Quintana Roo — Rapid real estate and tourism development in Cancun’s Hotel Zone is pushing an already outdated sewage and sanitation system to its limits, threatening the ecologically sensitive Nichupté Lagoon, surrounding wetlands, and the coral reefs of the Mexican Caribbean, experts and environmental groups warn.

The core concern is not just the age of the hydraulic networks — operating for over five decades — but the ongoing discharge of untreated wastewater that directly impacts one of the region’s most fragile and vital ecosystems.

Antonella Vázquez Cavedon, founder of the association Defending the Right to a Healthy Environment (DMAS), said previous studies have warned of the system’s insufficient capacity, yet new developments continue to be approved.

“For years, the Hotel Zone has been unable to handle any more load. Fonatur itself warned that the infrastructure was insufficient, and the municipality has long known about illegal discharges,” the activist said, questioning the continued increase in density in fragile urban areas.

Pollution Map of the Lagoon

Citizen warnings are backed by a water quality study conducted by AyMA Engineering and Consulting for the Benito Juárez municipal government. The assessment documented nine points with active wastewater discharge pipes, 15 additional sanitation pipes, 14 stormwater drains flowing into the mangrove, 11 underwater springs, 10 sewage overflows, and six surface springs.

Despite identifying these hot spots, experts consider the measures taken so far insufficient. The problem is exacerbated by the age of the sewer system, designed nearly 50 years ago for a much smaller residential and tourist capacity, leading to frequent collapses and blockages.

Official Stance on Modernization

In contrast, Ricardo Archundia Pérez, operating president of the Quintana Roo Tourism Infrastructure Institute (Infratur), acknowledged the challenge of maintaining services over half a century old but defended the viability of new real estate projects conditioned on parallel investments in public services.

“Cities must modernize. We can welcome new projects as long as there is institutional coordination to strengthen services,” he said, highlighting that the state government is promoting comprehensive planning focused on transparency and urban improvement.

Direct Impact on Reefs

Scientific research has demonstrated a direct hydrological connection between the wetlands of the Nichupté Lagoon, the aquifer, and coastal currents. This means sanitation deficiencies are not limited to the lagoon but threaten to extend their negative impact to the Nizuc Reef and the marine biodiversity that underpins Cancun’s tourism economy.

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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