Is it required for the high-water alarm to be on a separate circuit than the pump?

The requirement for the high-water alarm to be on a separate circuit than the pump is crucial for ensuring the safety and functionality of the septic system. When the high-water alarm operates on a separate circuit, it provides a reliable and independent means of notifying users when there is a potential issue, such as an overfilling of the tank.

This separation is important because if the pump and the alarm share the same circuit, and there is a power failure or overload, both the pump and the alarm could become inoperable simultaneously. This could lead to an undetected backup or failure in the septic system, posing a significant risk for overflow and environmental contamination. Therefore, placing the high-water alarm on its own circuit enhances system security and allows for immediate awareness of potential problems, enabling timely intervention.

The other options do not adhere to this safety protocol, which is why they do not represent the best practice. Having the alarm on a separate circuit is not only a good practice but often mandated by local codes and regulations regarding septic system installations.