911 Health Watch’s Historic Settlement with NYC Leads to Release of Hidden 9/11 Documents
City Document Release: Home | Agreement | 2021-2026 | 2001-2020
On September 8th, 2026, we announced 911 Health Watch’s historic agreement with the City of New York and the Mamdani Administration to release the documents that the City has about what the City of New York knew about the dangers of the toxic chemicals covering lower Manhattan and Western Brooklyn and when did it know it that had been kept from the public for the past 25 years.
You can view the press conference with the Mayor here.
Here is portal that the City has created to release its records to the public.
Over the coming year as we work with the City to release more of their hidden documents, we expect to learn a lot more about what the City knew.
We will be posting here what we discover.
September 8, 2026, Press Conference
911 Health Watch’s Executive Director Benjamin Chevat said at the press conference with Mayor Mamdani:
I want to thank Mayor Mamdani for being the Mayor, after 25 years, who finally begins to answer the question, “What did the City know about the dangers from the toxic cloud at Ground Zero and when did it know it?”
I want to thank Steve Banks, who has changed the Law Department, getting it to do something revolutionary to resolve our lawsuit and comply with NY public records laws.
Through the agreement with 911 Health Watch, the City will make available to the public hundreds of thousands of pages of its records concerning September 11 air quality, risk assessments and messaging.
Here is the full prepared statement at the press conference by Benjamin Chevat.
Here is a copy of the agreement between 911 Health Watch and New York City.
Press Releases
September 8, 2026, Statement on Historic Settlement with NYC of 911 Health Watch’s Freedom of Information Request for the Release of 9/11 Records
September 8, 2026, Mayor Mamdani’s Press Release, “25 Years Later, Mamdani Administration Opens City’s 9/11 Records to the Public and Settles Multi-Year Legal Battle”
News Articles
NYC mayors have etched a 25-year legacy of anger over ‘missing’ 9/11 toxin documents
NY Daily News | September 7, 2026
Along with the legacy of heroism and sacrifice New York City is remembered for, one mayoral administration after another has left behind a legacy of anger and shame.
After 9/11, Documents Suggest, New Yorkers Were Misled About Air Quality
New York Times | September 7, 2026
The Mamdani administration is releasing more than 170,000 pages of documents related to the air quality around the World Trade Center site in the months after the Sept. 11 attacks.
Read The Secret Documents About 9/11 Toxic Exposure New York Officials Tried To Cover Up
The Daily Caller | September 10, 2026
Spurred to act by two lawsuits brought by concerned citizens, New York City has unveiled a new portal of 25-year-old documents about the air pollution around Ground Zero.
Mamdani drops massive 9/11 records trove as old claims about Ground Zero come under fire
Fox News | September 10, 2026
Mayor Zohran Mamdani says leaders ‘lied and told them they were safe to breathe in toxic air’ near the World Trade Center.
NYC releases 170K pages of long-hidden 9/11 documents on air quality risks — that show officials may have misled the public
New York Post | September 10, 2026
A massive secret trove of 9/11-related New York City records was released Tuesday, revealing city leaders potentially misled the public about toxic air risks in the aftermath of the terror attacks 25 years ago.
Mamdani Accuses Former N.Y.C. Leaders of Lying About 9/11 Air Quality
New York Times | September 10, 2026
Mayor Zohran Mamdani said that New Yorkers had gotten sick “because the leaders they trusted lied.” On Tuesday, he released 170,000 pages of records related to the aftermath of the attacks.
Mamdani: NYC leaders ‘lied’ about post-9/11 air quality
The Hill | September 10, 2026
New York City Mayor Zohran Mamdani (D) on Tuesday released records related to the city government’s response to worsened air quality after the Sept. 11, 2001, terrorist attacks, saying city leaders “lied” about how safe it was to breathe.
What to Know About the 9/11 Air Quality Documents
New York Times | September 10, 2026
The release on Tuesday included more than 170,000 pages of air quality reports, contamination records and correspondence among city officials in the months after Sept. 11.
9/11 air quality records released by NYC, Mamdani. What they reveal
Rockland/Westchester Journal News | September 10, 2026
About 170,000 pages of records are now accessible through a special September 11th Public Records Portal.
25 Years Later, Mamdani Administration Opens City’s 9/11 Records to the Public and Settles Multi-Year Legal Battle
Office of the Mayor, New York City | September 10, 2026
Across several mayoral administrations, first responders, elected officials and families of victims of 9/11-related illnesses have demanded the release of these records.
Mom Survived the Holocaust and 9/11 Only to Face ‘Very Rare’ Diagnosis Years Later. Her Family Blames Toxic Air
People | September 10, 2026
For years, Julie Menin and others have fought for answers about what authorities at the time really knew about the air in New York after Sept. 11.
9/11 first responder reacts after Mamdani releases trove of documents on site’s toxic air quality
CBS Morning News | September 10, 2026
John Feal, founder of the FealGood Foundation, joins CBS News with his reaction to the release and his take on cutbacks to a program meant to aid those suffering from illnesses linked to 9/11.
New York City unveils cover-up over toxic cloud
DW News | September 10, 2026
More than 170,000 pages of long-hidden records show New York City officials knew the air quality around Ground Zero was toxic following the 9/11 terror attack in 2001 but publicly maintained it was safe to breathe.
Nonprofit executive weighs in on 9/11 records release
Spectrum News NY1 | September 10, 2026
Ben Chevat, executive director of 9/11 Health Watch, joined “News All Day” to discuss the documents’ release.
“Toxic Nightmare”: 25 Years After 9/11, Health Effects Linger for Thousands
Democracy Now! | September 10, 2026
As New York City marks 25 years since the attacks of September 11, 2001, we host a roundtable discussion about the lingering health effects still affecting thousands of people who were exposed to toxic air and debris around Ground Zero.
Meet 9/11 Health Watch, NYC Group Behind Mayor Mamdani’s Release of 170K Pages on Ground Zero Toxins
Democracy Now! | September 10, 2026
“The Bush administration, the Giuliani administration all denied that there was an impact from these toxins,” says Benjamin Chevat, executive director of 9/11 Health Watch, which sued for the release of the records. He faults successive city governments for inaction, saying that “instead of mitigating the harm, they mitigated the city’s liability.”
NYC’s 9/11 document release could expand number of people receiving federal benefits
Gothamist | September 10, 2026
As part of a settlement agreement, the city established the documents portal, which includes air quality test records, and has also agreed to publish more records once they are reviewed and personal information is redacted.
10 Disturbing Details From NYC’s Newly Released 9/11 Files
WatchMojo.com | September 15, 2026
The truth may be harder to breathe than the air was.
A quarter-century later, 9/11 legal battles rage in court
All Rise News | September 15, 2026
Days ago, New York City settled lawsuits over toxic air, and Saudi Arabia will fight liability in court next month.
Mamdani Releases Documents About 9/11 Contaminants After Lawyers Fought For The Truth
What A Day | September 15, 2026
On today’s show, Jane speaks with Andrew Carboy, an attorney for 9/11 Health Watch, about the survivors of 9/11 and the devastating health problems they have faced over the past two and a half decades.