Versions of Iowa Code 135.105B - Voluntary guidelines -- health and environmental measures -- confirmed cases of lead poisoning on LawServer 2024 Iowa Code 135.105B – Voluntary guidelines — health and environmental measures — confirmed cases of lead poisoning 2023 Iowa Code 135.105B – Voluntary guidelines — health and environmental measures — confirmed cases of lead poisoning 2022 Iowa Code 135.105B – Voluntary guidelines — health and environmental measures — confirmed cases of lead poisoning. 2020 Iowa Code 135.105B – Voluntary guidelines — health and environmental measures — confirmed cases of lead poisoning. 2018 Iowa Code 135.105B – Voluntary guidelines — health and environmental measures — confirmed cases of lead poisoning. 2016 Iowa Code 135.105B – Voluntary guidelines 2014 Iowa Code 135.105B – Voluntary guidelines – health and environmental measures – confirmed cases of lead poisoning. 2009 Iowa Code 135.105B – Voluntary guidelines — health and environmental measures — confirmed cases of lead poisoning