Source: Environmental Protection Authority
The Environmental Protection Authority (EPA) is banning a crop insecticide, chlorpyrifos, after reassessing the chemical.
The ban will come into effect progressively during an 18-month phase-out period.
Chlorpyrifos is a broad-spectrum organophosphate insecticide used to control pests in pasture and grain crops such as wheat and for biosecurity treatment of pests.
The chemical is banned in the European Union and Canada, and its use is heavily restricted in Australia. It is in the process of being phased out internationally via the Stockholm Convention, of which New Zealand is a signatory.
As part of the reassessment, the EPA considered new information, called for submissions, and held a public hearing. A decision-making committee found that risks to people and the environment of using the insecticide outweighed the benefits.
“Operators spraying the insecticide and bystanders are most at risk from immediate and long-term health issues,” says Dr Shaun Presow, Hazardous Substances Reassessments Manager. “New evidence shows that even full personal and respiratory protective equipment don’t fully mitigate the health risks.
“The health risks for children exposed to chlorpyrifos in particular are concerning, which is why we have put in place an immediate ban on using the chemical in public places,” says Dr Presow.
“Chlorpyrifos also has harmful effects on plants and animals on land and in waterways.”
An EPA decision-making committee set an extended phase-out period for the use of chlorpyrifos and chlorpyrifos-containing substances to allow users to transition to alternative products.
“We acknowledge the concerns of some farmers who will need to find alternatives to chlorpyrifos products to control New Zealand grass grub,” says Dr Presow. “This is why we have approved and extended the 18-month phase-out period for farmers to find other ways to manage native grass grub.
“We are equally mindful of the risks to human health and the environment, and that the phasing out of chlorpyrifos is supported by some industry groups. Furthermore, our international trade partners are already imposing restrictions on the use of chlorpyrifos on food crops.”
From 10 July 2025 the use of chlorpyrifos will be phased out:
– over 18 months for those using the active ingredient to control grass grub
– over six months for all other industries
– immediately in public places.
– Chlorpyrifos is used only by professional users.
– Pronunciation guide for “chlorpyrifos”: clore-pir-ee-fos
