It's a shame we switched to it honestly. I'll have to find the paper, but there was a good study done about the results of switching to single stream. While the amount of goods being put in recycling bins went way up, the amount of goods being successfully recycled actually went down because of the contamination.

A lot of places had to stop their recycling programs entirely after China banned imported recycling material, as it turned out most of our 'recycling' was just being shipped to China or other countries and dumped in rivers after valuable metals were sifted out.