Boston adds more compost bins for residents to drop off food waste

Beacon Hill, Fenway, and the West End are the latest neighborhoods to become home to a city-run compost bin for residents to drop off their food waste for free.

“Project Oscar” has expanded rapidly in the past year, said Madeline Montgomery, the zero waste program coordinator with the city’s waste reduction team. At this time in 2024, the project boasted 14 locations. Now, with the three latest additions that opened in June, there are 20 compost bins across the city.

“We’ve gotten a lot of feedback that residents want more of these bins, and they would like them to be more accessible,” Montgomery said. “We’ve really been listening to folks and just understanding, like what’s working for them and like where they would like them to be.”

So far this year, the city has collected more than 108,000 pounds of food scraps, Montgomery said. Black Earth Compost collects the scraps to make compost, which the New England company then sells the compost to local farmers, according to the city.

While some residents can sign up for the free, curbside composting program, Montgomery said Bostonians living in large residential buildings with more than six units aren’t eligible. Instead, those residents can use the neighborhood compost bins.

Things like food scraps, coffee grounds, tea bags, flowers, paper products, and wine corks can be put in the Oscar bins instead of in regular trash receptacles. Montgomery said separating food scraps can benefit the environment, soil health, and keep the trash from stinking up the kitchen.

But, pizza boxes, oils, pet waste, compostable diapers, cigarette butts, yard waste, dryer lint, styrofoam, plastic bags, and charcoal should not be put into the bins, the city warns. Higher contamination rates means the city has to pay extra to have the compost properly disposed of, Montgomery said.

After a pilot program, the team chose to give all the bins locks, which residents can open. The lock combination is 214.

“We need to make sure that this program is sustainable, and making sure that the food scraps that are put in here by these residents, we want to make sure it’s actually getting composted,’ Montgomery said. “When there’s less contamination, we can better ensure that it’s getting composted.”

The bins are in most of Boston’s neighborhoods, including three in Brighton and two in Jamaica Plain, as well as at City Hall Plaza in Charlestown, Chinatown, East Boston, South End, South Boston, Roxbury, Roslindale, the North End, and Mission Hill.

Molly Farrar is a general assignment reporter for Boston.com, focusing on education, politics, crime, and more.