Health Canada has now completed its re-evaluation of the neonicotinoid imidacloprid, which is used in pest control products.

Scott Kirby, director of Environmental Evaluation at Health Canada, revealed the findings on Wednesday.

He said the assessment proposes that current use of imidacloprid is not sustainable, and the levels of this pesticide that are being found in waterways and aquatic environments are harmful to aquatic insects, such as mayflies and midges, which are important food sources for fish, birds and other animals.

There are no risks to human health.

To address the risks identified, Health Canada has also published a proposed risk management plan for public comment, which includes a proposed three-year phase-out of agricultural uses of imidacloprid in order to address risks to aquatic insects.

In some cases, where there are no alternative pest control products available, a longer phase-out transition period of five years is being proposed.

"Today's announcement follows a detailed science-based evaluation and demonstrates our Government's commitment to evidence-based decision-making," said Health Minister Jane Philpott. "Health Canada is taking the findings of the re-evaluation of this pesticide seriously, and is taking action to further protect the environment."

Health Canada is also launching special reviews for two other widely used neonicotinoids, clothianidin and thiamethoxam.