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Composting Collection

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Year-Round, Self-Service Composting

Not ready for a curbside composting subscription? Have more to compost than your cart will hold? The Waste Diversion Center accepts yard waste, household food waste and other compostable materials year-round during regular business hours. Visit the Waste Diversion Center webpage to find hours and location.

Curbside Composting Service

The convenience of curbside composting is available in Longmont! This is an opt-in subscription service for Waste Services residential customers.


  • Composting collection occurs on an every other week rotation by address.
  • View our Collection Schedule webpage to determine your composting pick-up day/week, and be sure to check our list of holidays.
  • Please have your green-lidded composting cart at the curb by 7 a.m. on your scheduled collection day.

How to Compost at the Curb

  • Each customer who subscribes to curbside composting service receives a black container with green lid.
  • Place all your compostable items into your composting cart. No need to sort.
  • Please do not put your compostables in plastic bags when you put them in the container. (Certified compostable bags and paper bags are allowed and encouraged.) See details below on clean composting.
  • Do not overfill your compost cart and be sure to keep the lid closed.
  • Wash the cart periodically. You are responsible for keeping your cart in a clean, sanitary condition at all times.
  • View our Waste Services Guidelines for more information on where and how to put your cart out for collection.

Clean Composting: Handling Food Waste

  • The simplest solution for many households is to put food waste in either a certified compostable bag (made from plant material) or a paper bag before placing it in the compost cart. Certified compostable or paper bags are available at local businesses and online.
  • Other, no-cost options include:
    • keep food waste in your freezer until the day of your curbside pickup.
    • place yard waste, newspaper or soiled paper and cardboard over your food waste.

Items Accepted

Yard Waste

  • Grass trimmings
  • Leaves
  • Branches (no larger than 6" in diameter)
  • Flowers & plants


  • Leftover table scraps
  • Fruit and vegetable scraps
  • Breads and sandwiches
  • Dairy products and eggs
  • Meat, fish and bones

Food Service Items

  • Compostable dishware, utensils, cups and containers (marked as "certified compostable")
  • Paper napkins & towels
  • Coffee grounds and filters, teabags

Non-recyclable Paper

(These are paper products that are not accepted in your curbside recycle container)

  • Neon, fluorescent, goldenrod or dark-colored paper
  • Shredded paper
  • Facial tissue (used okay)
  • Pizza boxes and food soiled cardboard
  • Waxed cardboard

Items NOT Accepted

Plastic or Styrofoam

  • Plastic or Styrofoam dishware, utensils and cups or to-go containers
  • Plastic-coated paper plates and cups
  • To-go coffee cups and lids from typical coffee vendors
  • Plastic food wrap, bags or packaging
  • Frozen food boxes (ice cream and frozen meals) and microwave meal trays
  • Fast-food hot or cold beverage cups
  • Food-contaminated aluminum foil (this is recyclable in your curbside container)
  • Paper milk and juice cartons (these are recyclable in your curbside container)


  • View our brochure about the curbside composting subscription: English | Spanish
  • Look over the Composting Guide to see what you can compost through the curbside program
  • Find answers to Frequently Asked Questions
  • Compostable cups and utensils are typically marked with a green band around the cup accompanied with the word “compostable." If not, it most likely is a plastic-coated product and should be tossed in the trash.
  • Pour leftover liquids down the drain before placing compostable cups in the cart. This will help keep your cart clean.
  • If something is not compostable, it may be recyclable.Think before you throw.
  • When in doubt, find out! Our Waste Wizard has the answers for what do with many items.

Contact Waste Services with any composting questions.

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