This BC Government webpage might help.
It explains what is exempted, and what isn't, and the circumstances that might lead to police enforcement.
Here's the initial paragraphs:
Health Canada granted the province of B.C. a three-year exemption under the Controlled Drugs and Substances Act to decriminalize people who use drugs, which came into effect January 31, 2023.
Under the exemption, possessing small amounts of certain illicit drugs for personal use in specific locations is allowed.
In these locations, adults 18 and older will not be arrested, charged or have drugs seized for possessing small amounts of certain illicit drugs for personal use. Instead, people will be offered health information and referred to treatment and supports if requested.
Locations:
Private residences
Places unhoused individuals are legally sheltering (indoor and outdoor locations)
Overdose prevention, drug checking and supervised consumption sites
Places that provide out-patient addiction services like rapid access addiction clinics
Illicit drugs covered under the exemption (up to 2.5 grams combined):
Opioids (such as heroin, morphine and fentanyl)
Crack and powder cocaine
Methamphetamine (meth)
MDMA (ecstasy)
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