On June 1, the U.S Environmental Protection Agency (EPA) announced the release of its draft Integrated Risk Information System (IRIS) health assessment for ammonia. The draft assessment was available for public comment for 60 days and will be sent for independent expert peer review.
The draft assessment includes an estimate of the amount of ammonia a person can inhale daily throughout a lifetime that is not likely to cause harmful health effects, which is less stringent than the current value for ammonia on IRIS.