Napa’s 5-Year Composting Stats Email Napa City and County residents threw out 9% less trash — and composted nearly 9,000 more tons — during the first 5 years of the food composting program. Thanks to all of you for helping reduce waste, decrease emissions and create local organic compost! Even so, we can do better. There are still thousands of tons of compostables going to the landfill. Join your neighbors and compost all your food scraps and soiled paper — check out naparecycling.com for all the details!