A major environmental health study that had been suppressed by the Trump administration because of the “public relations nightmare” it might cause the Pentagon and other polluters has been quietly released online.

The U.S. Centers for Disease Control and Prevention published the controversial 852-page review of health dangers from a family of chemicals known as perfluoroalkyl substances, or PFAS — manmade chemicals used in everything from carpets and frying pan coatings to military firefighting foams — on its website this morning, and will publish a notice in the Federal Register tomorrow.

The study upends federally accepted notions for how much of these chemicals are safe for people — recommending an exposure limit for one of the compounds that is 10 times lower than what the U.S. Environmental Protection Agency has maintained is the safe threshold, and seven times lower for another compound. The stricter exposure thresholds are similar to those established by state health agencies in New Jersey and Michigan. All told, the report offers the most comprehensive gathering of information on the effects of these chemicals today, and suggests they’re far more dangerous than previously thought.

PFAS compounds are proving to be pervasive in public water systems and around military bases across the country. The report describes health effects associated with exposure, including cancer, liver damage, decreased fertility, increased risk of asthma and thyroid disease in humans. Notably, it describes how daily consumption of extremely low doses of the chemicals appeared to have an effect on rats and mice tested in labs — including delayed eye opening in newborns and lower body weight, as well as changes to brain activity and skeletal composition. The CDC assumes that humans are more sensitive to the effects of substances than animals in setting limits. The report also expanded the focus of research from the two most well-known PFAS chemicals to include 12 others.