Why Is My Septic Tank Bubbling Outside? The 5 Most Common Causes!

A bubbling septic tank outside your home can be an alarming sight, leaving you wondering about the underlying cause. While some bubbling is normal, excessive or persistent bubbling warrants attention. In this comprehensive guide, we’ll delve into the reasons why your septic tank may be bubbling outside and provide practical solutions to address the issue.

Causes of Septic Tank Bubbling Outside

1. Clogged Drain Line:

A blocked drain line prevents wastewater from flowing smoothly into the septic tank, causing pressure to build up and result in bubbling outside.

2. Overloaded Septic Tank:

When the septic tank receives too much wastewater, it can become overloaded, leading to a buildup of solids and gases that cause bubbling.

3. Bacterial Imbalance:

The septic tank relies on beneficial bacteria to break down organic matter. An imbalance in these bacteria can disrupt the decomposition process, leading to excessive gas production and bubbling.

4. Clogged Vents:

Vents allow gases to escape from the septic tank. If these vents become clogged, gas can build up and cause bubbling outside.

5. Damaged or Broken Pipes:

Cracked or broken pipes can allow wastewater or gases to leak out, resulting in bubbling near the septic tank.

6. Roots in the Drain Field:

Tree roots can penetrate the drain field, blocking the flow of wastewater and causing bubbling outside.

7. Freezing Temperatures:

In cold climates, freezing temperatures can cause the wastewater in the septic tank or drain field to freeze, leading to bubbling when the ice thaws.

Solutions to Address Septic Tank Bubbling

1. Unclog Drain Line:

Use a drain snake or call a plumber to clear any blockages in the drain line.

2. Pump and Clean Septic Tank:

Regularly pumping and cleaning the septic tank removes solids and prevents overloading.

3. Restore Bacterial Balance:

Add commercial septic tank treatments or consult a professional to restore the balance of beneficial bacteria.

4. Unclog Vents:

Inspect and clean the septic tank vents to ensure they are clear and allow gases to escape.

5. Repair Damaged Pipes:

Identify and repair any cracked or broken pipes to prevent leaks.

6. Remove Tree Roots:

Use a root cutter or call an arborist to remove tree roots that are blocking the drain field.

7. Insulate Septic Tank and Drain Field:

In cold climates, insulate the septic tank and drain field to prevent freezing.

When to Call a Professional

If you are unable to resolve the bubbling issue on your own or if it persists despite your efforts, it is advisable to contact a qualified septic tank professional. They can diagnose the underlying cause and provide the necessary repairs or maintenance.

Final Note: Maintaining a Healthy Septic Tank

Understanding the reasons behind septic tank bubbling outside is crucial for maintaining a healthy and efficient septic system. By addressing the underlying causes and implementing appropriate solutions, you can prevent costly repairs and ensure the proper functioning of your septic tank for years to come.

What People Want to Know

1. Is it normal for my septic tank to bubble occasionally?

Occasional bubbling is normal, especially after heavy rainfall or when using high volumes of water. However, persistent or excessive bubbling warrants attention.

2. What are the signs of a clogged septic tank?

Slow draining drains, foul odors, and bubbling outside the septic tank are common signs of a clogged septic tank.

3. How often should I pump my septic tank?

The frequency of septic tank pumping depends on the size of the tank and the number of people in the household. Generally, it is recommended to pump every 3-5 years.