Versions of Iowa Code 158.5 - Sanitary rules on LawServer 2023 Iowa Code 158.5 – Sanitary rules 2022 Iowa Code 158.5 – Sanitary rules 2020 Iowa Code 158.5 – Sanitary rules 2018 Iowa Code 158.5 – Sanitary rules 2016 Iowa Code 158.5 – Sanitary rules 2014 Iowa Code 158.5 – Sanitary rules. 2009 Iowa Code 158.5 – Sanitary rules