What is the main purpose of irrigation codes and regulations?

The primary purpose of irrigation codes and regulations is to protect public health and water supply. These regulations are established to ensure safe and efficient water management practices in irrigation systems. They help prevent contamination of potable water supplies, which can occur from improper irrigation practices, such as backflow from irrigation systems into drinking water sources. Additionally, these codes often include guidelines for water conservation, ensuring that water is used responsibly and sustainably, which is crucial for maintaining the overall health of the community and its environment.

In contrast to the other options, while regulating water usage is essential, it is only one aspect of a broader mandate that includes health and safety concerns. Similarly, while these regulations can indirectly influence plant growth rates or installation costs through proper practices, their core intention focuses on safeguarding public health and ensuring the integrity of water resources.