The Four Main Types Of Septic Tanks

If you are trying to decide what type of septic tank that you should install, or are simply curious about the pros and cons with your already existing tank, knowing the four main types of septic tanks can help you make informed decisions about your home's plumbing. 

Concrete Septic Tanks

Concrete septic tanks are very durable, and have a lifespan of several decades. They will not float to the surface, as plastic or other septic tanks made out of lighter materials can. However, they can crack or separate from your house's plumbing over time due to pressure, improper installation, or just general wear and tear. If this happens, this can lead to leakage or runoff into the surrounding area, which will need to be addressed by a professional plumbing company.

Steel Septic Tanks

Steel septic tanks are much easier to install than concrete tanks, as they are much more lightweight. Additionally, they tend to be cheaper, as they are less labor intensive to install. However, they are much less durable,and tend to last no more than twenty years. They are also susceptible to rust, which can cause the tank to corrode and begin leaking into the ground, which is a health hazard and will require professional cleanup.

Plastic Septic Tanks

Plastic, or fiberglass, septic tanks are impervious to rusting and cracking that affects concrete and steel septic tanks. Additionally, they are much more lightweight than either of the two above tanks, and are easily installed. The main problem with plastic septic tanks is that, while they can resist cracking and corrosion, they can float to the surface in periods of heavy rainfall, which can break the pipes attached to it. Care should be taken to not drive vehicles over the septic tank as well, as plastic tanks are not capable of holding up heavy objects.

Aerobic Septic Tanks

Aerobic septic tanks are different in their structure instead of their materials. Aerobic septic tanks use oxygen to decompose the waste inside of the tank, and need to be powered with electricity to work properly. These types of tanks are the most expensive available, costing upwards of twice as much as concrete septic tanks, and requires constant maintenance to continue working efficiently. However, if properly maintained, aerobic septic tanks can continue to work indefinitely, and will decompose waste at a rate much greater than any of the other types of septic systems.