What Is a Septic System Alarm?

Moving from the city to a rural area is a dream for people who want to enjoy peace and nature. However, that rural lifestyle may involve living with a septic system.

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Whether you're just discovering what it takes to live with a septic system or you're a seasoned pro, having a septic system alarm can help you manage it effectively — and potentially avoid disasters like backups.

What Is a Septic System Alarm?

A septic system alarm monitors the water level within your septic tank. You receive a septic tank alert if the water levels get too high or low for the system to function properly. These alarms typically have a visual and audible alert system. In other words, if the system measures abnormal water levels, you'll see a light and hear a sound.

When the septic system alarm sounds (or a red light comes on), you can typically continue to use water for another day or so before any major issues arise. Think of it as an early warning system when the water levels stray outside the normal range. It's possible to receive false alarms if something happens to the float or it isn't installed correctly. However, it's important to investigate whenever the alarm sounds in case the water levels are high.

How Does a Septic Tank Alarm Work?

To measure the water levels constantly, a septic tank alert system includes a float switch inside the tank. The float switch connects to the alarm box component, which is outside the tank. If the float measures a level of water that's higher or lower than normal, it triggers the alarm box to put out an alert. Traditional alarms use cables to connect the float to the box, but wireless versions that use Wi-Fi or Bluetooth are also available.

It's common for the septic tank alert alarm to have a mute option you can engage once you notice the issue. While this option silences the alarm, the light generally stays on until the water levels return to normal. Once you resolve the problem, the alarm typically shuts off completely and the septic tank water level returns to normal.

Do All Septic Tanks Have Alarms?

Not all septic tanks have alarms, but that's only because not all septic tanks have pumps. These pumps move wastewater from the septic system to the drain field. If your septic system uses a pump, you'll probably have some sort of alert system.

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Where Is the Control Panel Located?

The system features two components. The float switch goes inside the tank, where it measures the water level. The actual septic system alarm is outside the tank, where you can see and hear it. You can choose an outdoor or indoor septic tank alarm.

Outdoor alarms mount to your home, another building or a post near the septic tank. To protect the alarm, it typically sits inside a waterproof enclosure. An indoor septic tank alarm goes inside your home or garage, which can make it easier to see and hear when the alarm sounds.

Regardless of where you install the septic system alarm, it's essential to have a reliable power source. Having a dedicated circuit increases the chances of the alarm continuing to work if problems develop with the septic tank. If the alarm is on the same circuit as the pump, an issue with the pump could trip the circuit breaker, shutting off power to the alarm. You can also choose a septic tank sensor with a battery backup to ensure it continues working even during loss of power.

Do You Need a Septic Tank Alarm?

A septic system alarm makes it easier to avoid issues such as a backup or overflow. It gives you time to address the issue before you have an expensive and messy problem on your hands. While your septic system should work well if you use it properly, problems can arise without warning.

Without an alarm, you probably won't realize there's an issue until you notice sewage backing up into your home or flooding in your drain field. This can result in costly damage to the septic tank that requires professional repairs.