What's Really in Illegal Cannabis: The RAIS Reports

Health Canada's RAIS system is the mechanism through which licensed producers issue voluntary recalls and safety alerts. When a batch of legal cannabis is found to have a labelling error, a potency discrepancy, or a contamination issue, the producer is required to notify Health Canada and issue a recall.

The system also documents safety alerts related to unregulated cannabis products seized or tested by health authorities across the country. These alerts are publicly available and paint a clear picture of what's circulating in the illegal market.

Testing of unregulated cannabis across Canada has found a range of contaminants that would never pass the testing requirements for legal product. Pesticides not approved for use on cannabis, including some that are banned outright in Canada, have been detected in samples from multiple provinces.

Mould and fungal contamination is another recurring issue. Cannabis that hasn't been properly dried, cured, or stored can develop mould that's not visible to the naked eye. Inhaling mould spores is a real health risk, particularly for people with respiratory conditions or compromised immune systems.

Heavy metals including lead and cadmium have also been detected in some samples. These can accumulate in cannabis plants from contaminated soil or water, and without mandatory testing, there's no way for a consumer to know whether a product is clean.

Every batch of cannabis sold through a licensed retailer in Canada has been tested by a Health Canada-approved laboratory before it reaches the shelf. Testing covers potency (THC and CBD content), pesticide residues, heavy metals, microbial contamination including mould and bacteria, and residual solvents in extract products.

If a batch fails any of these tests, it cannot be sold. If a problem is discovered after a product has already been distributed, the producer is required to issue a recall. The lot number on every legal package is what makes that traceability possible.

One of the most common reasons people give for buying from the illegal market is price. Legal cannabis is more expensive, the argument goes. But the price gap has narrowed significantly since legalization, and it continues to close as the legal market matures.

More importantly, the price comparison doesn't account for what you're actually getting. Unregulated cannabis has no testing requirements, no traceability, and no accountability. The lower price reflects the absence of those things, not a better deal.