What Are Some Common Drain Field Problems or Repairs?

New,construction,of,a,packed,bed,septic,leaching,field,inThe drain field, also known as the leach field or septic field, is a crucial component of a septic system. It is responsible for the filtration and distribution of wastewater from your home into the surrounding soil. However, over time, drain fields can encounter problems that require repair or maintenance. In this blog post, we will explore some common drain field problems and repairs that homeowners may encounter.

1. Drain Field Saturation

One of the most common issues with drain fields is saturation. When a drain field becomes saturated due to excessive water or poor drainage, it can lead to a backup of wastewater. This can cause toilets and drains to become slow or completely blocked. Saturation can occur due to heavy rainfall, improper septic system sizing, or a high water table in the area. To address this problem, additional drainage solutions may be required, such as installing a French drain or diverting excess water away from the drain field.

2. Soil Compaction

Soil compaction is another common issue that can affect the drain field. When the soil becomes compacted, it can hinder the absorption and filtration of wastewater. Compaction can occur due to heavy vehicle traffic over the drain field or inadequate soil preparation during installation. To address this issue, aerating or decompacting the soil may be necessary. This can be done through techniques such as tilling or using specialized equipment to break up the compacted soil layers.

3. Drain Field Clogging

Clogging is a significant problem that can occur within the drain field pipes or the surrounding soil. Over time, solid waste and sludge can accumulate in the drain field pipes, leading to blockages and reduced flow. Additionally, the biomat, which is a layer of microorganisms that helps filter the wastewater, can become clogged with excess organic matter or the use of harsh cleaning chemicals. To address clogging, the drain field pipes may need to be flushed or jetted to remove obstructions, and the use of septic-safe products can help prevent future clogging.

4. Tree Root Intrusion

Tree roots are notorious for seeking out sources of moisture, and a drain field can be an attractive target. When tree roots penetrate the drain field pipes, they can cause cracks, blockages, and ultimately damage the drainage system. Signs of tree root intrusion may include slow drains, foul odors, and excessive wetness or lush vegetation above the drain field area. Proper tree selection and distance from the drain field during landscaping can help prevent root intrusion. If roots have already caused damage, professional assistance may be required to perform repairs or replacement of the affected pipes.

5. Septic Tank Issues

While the septic tank itself is not a part of the drain field, it is closely connected to its functionality. Problems with the septic tank can indirectly affect the drain field’s performance. Issues such as a full or overflowing septic tank, a damaged or collapsed baffle, or excessive scum or sludge buildup can lead to improper wastewater flow into the drain field. Routine septic tank maintenance, including regular pumping and inspection, can help prevent these issues and prolong the life of the drain field.

It’s important to note that drain field repairs are not typically DIY projects and should be left to professionals experienced in septic system maintenance and repair. Attempting to repair or diagnose drain field problems without the appropriate knowledge and equipment can lead to further damage or contamination.


Drain field problems can significantly impact the functionality of a septic system. From saturation and soil compaction to clogging, tree root intrusion, and septic tank issues, addressing these common problems promptly is essential to prevent costly repairs and potential health hazards. Regular septic system maintenance, including professional inspections and proper use of the system, can help identify and address potential drain field issues before they develop into more significant problems.

Got Questions? Let Us Help!

Since 1956, Mike’s Septic & McKinley Sewer Services has been providing the local area with an invaluable service. We are a family-owned and -operated company that takes pride in the work that we do and the relationships we build with our customers. We strive for perfection with each job we take and make sure our customers are always happy. At Mike’s Septic & McKinley Sewer Services, we specialize in everything septic. We handle anything from tank and system design to the actual installation. We do septic system and tank repairs, cleaning, pumping, and routine maintenance. We also do tank and system compliance inspections and certification. Contact us today to learn more about what we can do for you!