When installing an antifreeze system, the solutions shall conform to whom?

In antifreeze system installations, it is crucial that the solutions used conform to regulations set by the local health department. This is because antifreeze solutions can have implications for public health, especially if there is a potential for leakage or contamination of potable water supplies. The local health department oversees the safety and health standards related to substances that may enter the water supply, ensuring that the antifreeze used does not pose a risk to public health.

Although the other options may have relevance within the broader scope of fire safety or state regulations, local health departments specifically address the health impacts of such materials, making them the authority to consult regarding the compatibility and safety of antifreeze solutions in a sprinkler system. Ensuring compliance with local health regulations protects both individuals and communities from possible hazards associated with improper use of chemicals in fire protection systems.