New York City Mayor Zohran Mamdani has made public over 170,000 pages of documents that challenge prior assurances about the safety of the air around Ground Zero after the 9/11 attacks. This announcement, made just days before the 25th anniversary of the attacks that claimed 2,977 lives, aims to shed light on the health risks faced by those exposed to the toxic dust and debris that followed.
The release includes a significant collection of records from the Department of Environmental Protection, which were uncovered in 68 boxes. These documents trace back to the period immediately following the horrific events of September 11, 2001, and reveal disturbing findings about air quality at the time.
Mamdani expressed serious concerns during a press conference, stating that “people got sick because the leaders they trusted lied and told them they were safe to breathe in toxic air.” This sentiment echoes the frustrations of many affected individuals, as illnesses linked to the attacks have plagued thousands who were exposed to hazardous materials.
Documents released show that, nearly a year post-attacks, asbestos was detected near Ground Zero, specifically at a building less than a mile away. While some areas recorded asbestos levels under regulatory limits, health experts emphasize that no level of asbestos exposure is considered safe. The dangers indicated in these records are sobering.
Among the documents is a memo from then-Mayor Michael Bloomberg’s adviser penned in February 2002, highlighting concerns about indoor air quality. This memo pointed out that the Environmental Protection Agency had effectively passed the responsibility for monitoring indoor air quality to the city without adequate oversight, which could lead to potential public relations and legal ramifications.
Interestingly, Stuyvesant High School, located less than half a mile from the World Trade Center site, reported alarming levels of asbestos in its auditorium nearly a year after the attacks. Testing revealed asbestos concentrations that were exceptionally high—about 500 times above the level that would trigger a professional cleanup.
The findings didn’t go unnoticed; parents raised alarm and their concerns were sent to city officials. This situation reflects ongoing suspicions about the thoroughness of cleanup efforts in the wake of 9/11, a topic that continues to resonate today, especially as the anniversary approaches.
Some residents in Tribeca also voiced their worries about incomplete cleanup efforts, which, they claimed, could expose them to lingering dangers in their homes. Ten months after the attacks, the Independence Plaza North Tenant Association urged the EPA to conduct more thorough environmental testing. This highlights the broader struggle many faced living in proximity to Ground Zero—fear of the unseen health risks still lingering in their environment.
Despite some cleanup contracts being awarded as late as September 2002, reports indicate that asbestos contamination was still present in certain apartments, leading to legal disputes and continued anxiety for residents. A couple living in Independence Plaza North found elevated asbestos levels in their home long after initial cleanup efforts had begun.

