What Is a Drain Field

The drain field, also called a leach field, is the part of the septic system where treated wastewater is dispersed into the soil. It consists of perforated pipes buried in gravel-filled trenches that allow liquid to filter through the ground.

When drain fields fail, wastewater cannot properly absorb into the soil, leading to backups, odors, and standing water.

Signs of Drain Field Problems

Common Causes of Drain Field Failure

Drain fields can fail due to soil saturation, clogging from solids that escaped the septic tank, compaction from vehicles driving over the area, tree root intrusion, or poor soil drainage conditions.

Lack of regular septic tank pumping is one of the most common reasons drain fields become clogged and fail prematurely.

Related Septic Topics

Learn more about related septic system situations affecting Maine homeowners.

Septic Help Line

If you suspect drain field problems or notice signs of system failure, speaking with a septic professional can help evaluate the situation and determine repair options.

Septic Help Line

Call routing availability may vary depending on county location in Maine.