Iowa Code § 455B.752
A person that holds indicia of ownership of property contaminated by a hazardous substance, hazardous waste, or regulated substance, and that satisfies all of the conditions provided in section 455B.381, subsection 7, paragraph “b”, or section 455B.471, subsection 9, paragraph “b”, subparagraphs (1), (2), and (3), or a person that has acquired property contaminated by a hazardous substance, hazardous waste, or regulated substance, shall not be liable to any third party for any third-party liability arising from such contamination provided that all of the following apply:
2. The person is not a potentially responsible party or affiliated with any potentially responsible party by reason of any of the following:
2004 Acts, ch 1141, §76, 79
Referred to in §455B.751, 455B.753