The Environmental Risk Management Authority is reassessing the priorities for an ongoing review of hazardous substances, including agricultural chemicals and pesticides.
ERMA has been reviewing the use of 20 substances since 2006. They include herbicides, marine anti-fouling paint and the fumigant methyl bromide.
So far it has looked at 12 of the substances on the list.
While it has been focusing on single substances, ERMA says it will also eventually address concerns about issues such as spray-drift management.
It's now seeking public feedback on what priority should be given to the products still under review. It will take into account the potential risks from the substances and peoples' exposure to them.
Submissions close at the end of October