Healthy Compost

Combat Climate Change

Organics like food scraps and yard trimmings make up 30% of what Californians dump in landfills. Organic material in landfills emits 20% of California’s methane, which is a highly potent greenhouse gas and a major contributor to climate change. One of the most effective ways you can have a positive impact on our climate is to help keep organic materials out of the landfill – simply by using your curbside collection services if you have them.

Throughout the Bay Area, curbside collection services help turn food and yard trimmings into mulch, compost, livestock feed, and renewable energy. Compost created from local organic materials is put back into our farms, parks, and landscapes, so keeping plastic, glass, and other trash items out of the organics is important to ensure that it is healthy and safe for communities.

Programs are different depending on where you live and work so to be sure to keep the maximum amount of organic material out of the landfill, please check local instructions. Here are quick links to participating BayROC area programs.

Sort Right 

photo by iStock.com/benedek

Whenever you have the opportunity, please do your part to separate organics and recycling from trash.  

Whether you are at work, a café, school, or event, you may come across a three-bin sorting station. Please separate your recycling and organics according to the signs; even a banana peel makes a difference!  

Prevent Waste  

Reducing the organic waste we generate is the most effective way to keep it out of the landfill, and requires less resources. 

Preventing food waste is the best way to help the climate and save money. Check our tips to prevent food loss.  

Opting for native drought-resistant landscaping can reduce plant waste, save water, and create a natural habitat for local birds, bees, butterflies and other wildlife.  

Get Free Compost 

Depending on where you live, the food scraps and plant trimmings you put out for collection may be turned into compost used on gardens and farms. Please check with your local city or for news about compost giveaways. Here are some resources to help you get started. If the compost is still warm, let it cool before you spread it. Beware of contaminants and which plants you use the compost on. 

Alameda County

San Francisco

San Mateo County – Rethink Waste Service Area

Santa Clara County

Sonoma County

Using compost for your plants helps add nutrients to the soil, grow healthier, more pest-resistant plants, improves drainage, reduces soil erosion, and increases soil water holding capacity to reduce water use.  

Make Your Own Compost 

Composting at home is an effective way to keep those valuable food and plant resources, and turn them into a nutrient-rich soil amendment for your yard and garden. Why buy it, when you can make it yourself from scraps? 

Free workshops are available to help you get started. If you don’t have a yard, you can still compost at home – with compact vermicompost systems.  

Alameda County

San Mateo County

Santa Clara County – University of California Agriculture and Natural Resources Community Workshops

South Bay Green Gardens

Sonoma County