Even for homeowners whose households rely upon a septic system for waste water disposal, the system can be something of a mystery. Knowing more about your septic system is key to maintaining it properly, though. In the interest of better understanding your septic system, finding out what it’s comprised of and how it’s made is a smart move.
There are three primary materials used in the construction of septic tanks. Just as there is no one-size-fits-all solution for septic tank sizing, different materials come with their own benefits and drawbacks.
Some septic tanks are made of steel. These tanks can degrade over time, and come with no guarantee regarding the life of the tank itself. Wastewater, acids and salts can deteriorate a steel tank, weakening its structural integrity.
Pre-cast concrete septic tanks can actually strengthen over time, and are thought to be less likely to collapse during septic tank pumping. The concrete is more flexible that steel or fiberglass, and can even be watertight when they’re manufactured according to NPCA best practices. Still, they may also be subject to deterioration from salts, acids and wastewater.
Many new septic tanks are made of high-tech polymers and high-density polyethylene. These are not as prone to degradation due to normal use and exposure to waste. Most come with long factory guarantees, which is not the case with steel and some concrete tanks.
If you’re installing a septic system on a new construction site or replacing your existing tank, it’s important to discuss your questions with an experienced sewer and septic professional. They can address these questions and help you to choose a septic tank of the right material for the conditions on your unique property.
