What is the law regarding rinsing farm tanks with water and adding it to the milk supply?

The law regarding rinsing farm tanks with water and adding it to the milk supply is indeed forbidden by law. This regulation is in place to ensure the quality and safety of milk intended for human consumption. The introduction of water into the milk supply can dilute the milk, potentially leading to substandard product quality and safety issues. Additionally, there are strict standards regarding milk production and processing to maintain hygiene and prevent contamination. By prohibiting the practice of rinsing the tanks with water and adding it to the milk, regulations help to uphold the integrity of the dairy supply and protect public health.