Septic Tank Problems

Septic tanks are built to be very strong and sturdy. septic tanks are made of concrete that is about 3 inches thick and are designed to last around 25-35 years. Eventually the tank will start to show signs of deterioration. As bacteria breaks down solids inside the tank they start releasing toxic gases known as sulfuric acid. Over time this acid will build up above the water level causing concrete to become weak and brittle. Because of this reaction, structural damage to the tank and its components will start or occur.
Septic tanks are made with rebar to make them as strong as possible. Due to the toxic gasses the concrete will start deteriorating and showing the rebar. This is a major red flag for septic inspectors and new home buyers.

Many tanks have concrete baffles that are casted on the inside of the tank. The outlet baffle is usually the first component inside the tank to break down. The outlet baffle is the most important component inside of the septic tank. The main function of this component is to keep the solids inside of the tank and away from the outlet pipe leading to the drainfield. it is highly recommended to upgrade the baffles from concrete to PVC before they deteriorate.

When a tank is installed in the ground there should be about 1-2 feet of soil covering the lids to keep unwanted rain water out. If a tank is installed lower than the suggested depth this weight in combination with the gasses will weaken the structure and create cracks in the tank. The deeper the tank is buried the higher the chance of the tank cracking and collapsing.

Many times, people will plant trees and large bushes next to and around their septic
tanks. The roots will start to break through the concrete tanks and cause the systems to fail.
Over time the thin roots work their way under concrete lids and through creases in the tank . Once they are inside the tank they will start to thicken and expand over time. As a homeowner it is very important to keep all trees and bushes at least 15-20 feet away from any component of the septic
system.