Why Compostable Bags Aren’t Compostable in San Diego – USA

Why Compostable Bags Aren’t Compostable in San Diego – USA

Posted on August 21, 2024 by DrRossH in Plastic Waste News

It takes a lot of digging to verify whether a compostable or biodegradable product is what it says it is. Take this San Diego example.

Source: Why Compostable Bags Aren’t Compostable in San Diego

Then there’s the brave new world of plant-based, otherwise dubbed, compostable plastics.  

“That gets really messy because some are 100 percent plant-based, made of corn or seaweed, and they should be biodegradable,” Brandon said. “Some are only 50 percent plant and 50 percent petroleum-based plastic. A part of it will never break down.” 

Kelly Terry, a spokesperson for the city’s Environmental Services Department, wrote in an email that products labeled “compostable” do not all break down the same way, so the Miramar Greenery composting facility cannot accept these items.  

When they do end up at the Miramar Greenery, a part of the Miramar landfill repurposed for composting the city’s food waste, they “cause contamination and diminish the quality of the finished compost,” she wrote. 

“All plastic bags labeled compostable or biodegradable should be placed in the trash bin,” Terry wrote.