They can definitely be APA-accredited, though I know nothing about CACREP.
Lots are, York, McGill, Waterloo, Western Ontario, and Manitoba all are to the best of my knowledge (I looked at all these schools when I applied).
That being said, I think I remember someone posting about more and more canadian internships losing APA-accreditation (often due to not seeking re-accreditation) because Canadian internships and schools are trying to move towards relying on their own accreditation system. Can't say I blame them since APA-accreditation is kind of a clusterf**k it seems! I could be remembering that wrong so don't quote me on it, but I can guarantee that as of summer/fall of 2006, all the schools I mentioned were APA accredited.