According to a CNBC meaningless list:

That Calgary holds the No. 1 position on this list is even more impressive considering Calgary’s province Alberta actually leads Canada in per capita waste: 2174 pounds per person.

Facing a rapid economic and population expansion, Alberta revamped its sanitation system in the past two years with the Too Good to Waste program, which aims to decrease the amount of waste sent to landfills.

Additional efforts were being made to reduce construction and demolition waste through training, increasing recycling of materials (such as wood, asphalt, drywall, shingles and concrete), as well as financial incentive and disincentive programs.

proof – CNBC

Thanks Jenn.