Septic Tank Problems From Tree Roots

Tree roots can damage a septic system and cause septic tank overflow.

Although trees provide shade in a yard, they should not be planted near a septic system. Tree roots break the pipes in the septic system, leading to clogs, backups and fluid overflow. Removing existing trees and planting other types of plants in the yard will help you avoid costly problems due to septic system failure.

Sewage Overflow in the House

Tree roots can cause sewage system blockage by breaking or clogging the pipes that go into or out of the septic tank. Blocked septic system pipes may cause sewage to back up into the house. In addition to property damage, raw sewage poses a high risk of health problems to the residents of the household. To reduce the likelihood of sewage backup into the house, trees should not be planted near the septic system.

Premature Filling of the Septic Tank

Blocked or broken septic system pipes due to tree roots may also lead to premature filling of the septic tank. If septic tank levels are not checked regularly, the sewage may overflow into the house or into the drain field. A properly running septic system should only require draining of the septic tank every five years at the most. Premature filling of the septic tank will require that the tank must be checked and emptied more often, which can be costly.

Unpleasant Odors

Blockages caused by tree roots can cause the drain field to overflow because water is not flowing properly through the septic system. The overflowing water and sewage will cause unpleasant odors in the yard and the house. The best way to remove tree roots from the drain field and other parts of the system is by mechanical means. Chemicals that remove tree roots will contaminate the groundwater, and eventually the drinking water as well.

Wet Spots in the Yard

An overflowing drain field caused by tree root interference can cause the drain field to drain too slowly to support the septic system. Wet spots will form in the yard and create a nuisance for those trying to use the yard for recreation. In addition, the yard will become difficult to mow, and the plants above the drain field may die. Finally, standing water in the yard may lead to unwanted mosquito breeding areas.

References

• University of Maryland Extension; Septic Systems A to Z Maintenance; Thomas H. Miller; Apr. 2007
• University of Maryland Extension: Septic Systems A to Z Maintenance: FAQ
• University of Georgia Extension; Septic Tank Maintenance and Care; Cecil Hammond and Tony Tyson; Sept. 1991