Which state agency is not involved in pesticide regulation?

The Texas Environmental Health Agency is not involved in pesticide regulation. In Texas, the primary agency responsible for overseeing and regulating pesticides is the Texas Department of Agriculture, which enforces laws regarding the use and registration of pesticides. The Texas AgriLife Extension Service plays a role in educating the public about agricultural practices, including the appropriate use of pesticides, but does not regulate them. The Texas Commission on Environmental Quality is involved in ensuring environmental protection and public health, which includes certain aspects of pesticide regulation as they relate to environmental standards. However, the Texas Environmental Health Agency does not have a direct role in the regulation of pesticides, making it the correct choice for this question.