Most building and household debris is welcome. The limits come from four Iowa land-disposal bans and from what the Scott County facility will take.
Iowa law bars four things from going into the ground. Yard waste cannot be landfilled unless it is separated at the source for composting. Lead acid batteries, including car batteries, are banned outright. Waste tires cannot be land disposed. And a landfill may not accept used oil for final disposal, with used oil filters having to be separated and recycled rather than buried.
The landfill applies its own rules on top. Liquids and hazardous materials such as paint, pesticides, herbicides, and automotive fluids are not allowed there at all, and go to the Household Hazardous Material facility on Carey Avenue instead. Grass, leaves, and logs have to go to the compost facility. Computers, televisions, and other electronics have to go to the Electronics Recovery Center, also on Carey Avenue.
Davenport's own rules add that no hazardous waste may be placed in any container used by the city or a private collector, and that the city will not collect, transport, or dispose of hazardous waste of any kind.
One practical note: Davenport requires a commercial container to be covered, and the landfill requires every arriving load to be tarped or tied down. Keep the load level and under the rim so it can be covered properly.
If you are unsure about an item, ask your account manager before it goes in the container.