Versions of See prior versions of a law on LawServer 2024 Texas Health and Safety Code Chapter 503 – Health Risk Assessment of Toxic Substances and Harmful Physical Agents 2023 Texas Health and Safety Code Chapter 503 – Health Risk Assessment of Toxic Substances and Harmful Physical Agents 2022 Texas Health and Safety Code Chapter 503 – Health Risk Assessment of Toxic Substances and Harmful Physical Agents 2019 Texas Health and Safety Code Chapter 503 – Health Risk Assessment of Toxic Substances and Harmful Physical Agents 2018 Texas Health and Safety Code Chapter 503 – Health Risk Assessment of Toxic Substances and Harmful Physical Agents 2016 Texas Health and Safety Code Chapter 503 – Health Risk Assessment of Toxic Substances and Harmful Physical Agents