Mayor Bill de Blasio proposed mandatory composting during his Earth Day announcement, but in September, he temporarily shelved expansion of a pilot project to recycle food scraps due to low use.

The project more than doubled curbside composting collection from 13,000 tons in fiscal year 2017 to 31,000 tons in 2018, according to the Department of Sanitation. But the city generates 14 million tons of garbage a year, about one-third of which is food waste, so the increase in composting made only a tiny dent in landfill reduction.