Curbside composting for yard waste, food waste, and other organic material is available to Iowa City residents living in single-family homes up to 4-unit residential buildings ($3.50/month on utility bill). The City provides 95-gallon or 25-gallon yellow-top composting carts to curbside customers.
What materials can you compost at the curb?
Compost these items in the yellow-top cart:
- Food waste
- Examples: coffee grounds, eggshells, bread and grain products, meat and bones, seafood and shells, non-liquid dairy products, fruits and vegetables
- Food and yard waste can be combined in your yellow-top composting cart.
- 95-gallon cart (weight limit of 250 pounds), or
- 25-gallon cart (weight limit of 50 pounds)
- Do not place food in free-standing paper yard waste bags. To reduce mess, you may place food in newspaper, paper bags, or certified-compostable bags (labeled ASTM D6400 or certified-compostable) before placing in the cart.
- Yard waste
- Examples: grass, leaves, garden residue, and woody yard waste
- Yard waste can be placed in your yellow-top composting cart.
- Paper yard waste bags (any brand allowed; weight limit of 50 pounds) or bundles (specification requirements below) with a $2 City yard waste sticker attached per bag or bundle are allowed at the curb. Stickers are available at the City Hall Revenue Office and participating retailers, including both Iowa City Ace Hardware locations, the Hy-Vee stores in Iowa City and Coralville, and the Fareway store on Westwinds Drive in Iowa City.
- Tree limbs or woody yard waste specification requirements:
- Individual pieces (in bundle or container):
- 4 inches maximum diameter
- 48 inches maximum length
- Bundles:
- 18 inches maximum diameter
- 48 inches maximum length
- 50 pounds weight limit per bundle
- Securely tie each bundle with natural twine or string (no plastic varieties allowed).
- Any brush not meeting these specifications will be left at the curb.
- Other organic material
- Garlic mustard
- Holiday trees (natural, unflocked trees only; remove all decorations)
- Pumpkins and gourds (remove any candles or lights from inside your pumpkins)
- Shredded paper
- Paper towels or napkins
- Pizza boxes
- Coffee filters
Do not compost these items:
- Pet waste and diapers
- Plastic
- Plastic bags (including soil or mulch bags)
- Food packaging
- Styrofoam
- Cigarette butts and ashes
- Foil- or plastic-coated paper dishware (plates, bowls or cups)
- Infected plant material (such as black knot fungus): Bag and place in trash.
- Liquids
- Plant pots (including plastic, terracotta, or other materials)
- Garden netting or liners
- Glass or metal
- Hazardous material
- Sod
- Dirt or sand
- Rocks
- Tree root balls
- Painted, treated or stained wood (including particle board)
- Dead animals or carcasses
Not sure an item can be composted? Do not compost it!
Clean, non-contaminated material is turned into clean, high-quality compost. Material contaminated with the above listed items makes low-quality compost and will not be picked up.
Yellow-top Composting Carts
Sign up for a cart.
Curbside customers can receive 25-gallon or 95-gallon carts for curbside composting collection by completing the Cart Request Form. Yard waste and food waste can be added to the same cart for pickup. The first cart is included in the monthly service fee.
Residents are allowed additional carts at a cost of $3.50 per month per cart to cover the cost of the cart and service. Carts will be delivered based on availability and wait times vary. Contact Resource Management at 319-356-5151 for more information.
If a customer determines that an additional cart they had ordered is no longer needed, a pickup can be scheduled for January of the following year. The monthly cart fee will continue to be charged until that time.
Yard Waste Stickers
A $2 yard waste sticker is required for each paper bag or bundle of yard waste placed at the curb for collection using Iowa City curbside collection services.
Stickers are available at the City Hall Revenue Office and participating retailers, including both Iowa City Ace Hardware locations, the Hy-Vee stores in Iowa City and Coralville, and the Fareway store on Westwinds Drive in Iowa City.
Residents are encouraged to use the City-issued yellow-top composting cart to minimize the need for stickers and reduce the physical strain of lifting bags and bundles, improving safety and efficiency for collection crews.
Each household is eligible for one cart, included in the monthly $3.50 composting service fee. Additional carts are available for an extra monthly charge.

Wintertime Composting Tips
Curbside composting collection continues throughout the winter season.
Tips to reduce organic material from freezing to your curbside cart:
- Line your cart with cardboard or newspaper before placing wet yard waste or food waste in cart.
- Place food waste in freezer to preserve material. You can place frozen food waste in cart for your curbside collection day, or keep it frozen until temperatures warm up.
- Place food waste in paper bags or ASTM D6400-certified compostable bags before placing in cart.
- Wait to put your cart at the curb until 7 a.m. on your curbside collection day (if cart is regularly stored indoors).
If you keep your cart outdoors and regularly add food waste (or yard waste such as wet leaves) to it, the material may freeze to the cart. This can cause the materials to stick to the cart during curbside pickup. Material will thaw and loosen when temperatures warm up again.