Iowa Code § 455D.13: Land disposal of used oil and used oil filters prohibited — collection and recycling.

1. A sanitary landfill shall not accept used oil for final disposal.

2. A person offering for sale or selling oil or oil filters at retail in the state shall do the following:

a. Accept at the point of sale, used oil and used oil filters from customers, or post notice of locations where a customer may dispose of used oil and used oil filters.

b. Post written notice that it is unlawful to dispose of used oil in a sanitary landfill.

3. A business that generates used oil filters or collects used oil filters from a person shall not dispose of the oil filters in a sanitary landfill and shall source-separate and recycle the oil filters.