Is There Anything I Need to Do to My Aerobic Septic System During Freezing Temperatures?

“Good news — your aerobic septic system handles freezing temperatures better than most Texans.”

Aerobic Septic System Freezing Temperatures: What Homeowners Should Know

During periods of aerobic septic system freezing temperatures, many homeowners wonder if their system needs special attention or protection from the cold.

Every now and then we get a cold snap in north-central Texas that brings freezing temperatures, ice, or even freezing rain. When that happens, homeowners sometimes wonder if they need to do anything special to protect their aerobic septic system.

The good news is that in most cases, there’s very little you need to do.

Aerobic systems are designed to operate year-round, and most of the important components are buried underground where the soil helps protect them from freezing.

Most of the System Is Underground

The tanks, piping, and treatment components of an aerobic septic system are buried below the surface. The ground naturally insulates these components from freezing temperatures.

In addition, warm wastewater from the home moving through the system helps maintain temperatures that prevent freezing.

Because of this, freezing weather rarely causes problems for the main parts of the system.

Spray Heads Are the Most Exposed

The part of the system most exposed to freezing weather is the spray distribution system.

Spray heads sit above ground and can occasionally develop ice buildup during extended freezing conditions. This usually isn’t harmful to the system and typically resolves itself once temperatures warm up.

You may notice spray patterns looking a little different during freezing weather, which is normal if ice forms inside the heads. If spray heads don't spray because of freezing temps it can cause damage to your pump.

A Few Simple Things Homeowners Can Do

There usually isn’t much maintenance required during freezing weather, but a few simple habits can help.

During Extended Freezing Weather

Slow down on water usage..

Keep Spray Heads Clear

Avoid piling snow, leaves, or debris around spray heads so they can operate properly.

Pay Attention to Alarms

If the system alarm activates during freezing weather, reduce water usage. Locate the spray head closest to system and try thawing the head with warm water..

Slow Dripping a Faucet

A slow drip from a faucet can help prevent pipes from freezing. If you choose this method,

collect the water and throw it out.

When Cold Weather Might Cause Issues

Extended periods of very cold temperatures can sometimes cause spray heads to freeze.. It can also cause compressor failure and low air switch failure. While this isn’t common in Texas, it can occasionally happen during severe winter weather.

In most cases, once temperatures rise above freezing, the system returns to normal operation.

The Bottom Line

For most homeowners, there’s nothing special that needs to be done during freezing temperatures.

Aerobic septic systems are designed to operate through changing weather conditions and continue doing their job quietly in the background.

And honestly, when your septic system isn’t demanding attention, that’s usually a good sign.

Coleman Aerobic Septic

Serving homeowners throughout Granbury, Hood County, Somervell County, and Erath County for more than 2 decades.

Septic systems aren’t something most people think about — until something goes wrong. That’s where we come in.