Versions of Iowa Code 331.553 - General powers on LawServer 2024 Iowa Code 331.553 – General powers 2023 Iowa Code 331.553 – General powers 2022 Iowa Code 331.553 – General powers 2020 Iowa Code 331.553 – General powers 2018 Iowa Code 331.553 – General powers 2016 Iowa Code 331.553 – General powers 2014 Iowa Code 331.553 – General powers. 2009 Iowa Code 331.553 – General powers