What is Composting?
Composting is Nature's way of recycling and is one of the best and easiest things you can do to reduce waste and grow healthy and sustainable garden or houseplants. Under controlled conditions, organic material decomposes and is transformed by critters in the soil such as bacteria, insects, earthworms and fungi that recycle nitrogen, potash, phosphorus, and other plant nutrients into humus.

If you are interested in receiving information about composting and upcoming workshops or are already composting, email us at

Why Compost?

  • Save Time and Money.  Reduce soil and fertilizer purchases while decreasing local disposal costs. By composting, you won’t have to bag and drag yard waste to the curb for collection!
  • Curb Climate Change.  When organic is buried in the landfill, methane is produced, a greenhouse gas that is 72 times as potent as carbon dioxide over a 20 year timeframe. 
  • Protect Groundwater.  In the landfill, rainwater collects contaminants when it comes into contact with garbage. This liquid " leachate", can pollute ground water, lakes, and rivers.
  • Enrich The Soil. Compost reduces erosion by improving soil structure and adds essential nutrients to the soil, helping to grow trouble-free plants with less water, fertilizer or pesticides. Plants love compost!
  • Learn And Have Fun!  Children and adults develop a fascination with their compost piles. The complete recycler composts food and yard wastes!

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Dept of Public Works

147 Hampshire St
Cambridge MA 02139


Hours of Service

Monday: 8:30am-8pm
Tuesday-Thursday: 8:30am-5pm
Friday: 8:30am-12pm

Recycling Center Hours
Tuesday & Thursday: 4:00pm-7:30pm  
Saturday: 9:00am-4:00pm