Septic tanks are an integral part of today’s wastewater management system and play an essential role in keeping our environment clean and healthy. Septic tank material typically consists of durable materials that can withstand extreme conditions and corrosive substances encountered on the job. In this article, we’ll look at the types of materials utilized to construct septic tanks and why septic tank material proves so resilient.
When building septic tanks, the materials used can vary based on factors like location, size and the type of wastewater they will handle. But the three most popular materials are concrete, plastic and fiberglass; each having its own advantages and drawbacks which must be taken into consideration when selecting one for your project.
Concrete Septic Tanks

Concrete is a popular material for building septic tanks due to its durability and longevity. Constructed out of cement, sand, water and reinforced with steel bars or mesh for extra strength and resilience, concrete tanks have excellent corrosion and rust resistance as well as chemical damage which makes them ideal for wastewater treatment processes involving harsh chemicals and substances.
Another advantage of concrete septic tanks is their customizability. They come in various shapes and sizes to meet the project requirements, while being highly resistant to damage from tree roots compared to plastic or fiberglass tanks.
Plastic Septic Tanks
Plastic septic tanks are an increasingly popular choice for septic tank material. Made from high-density polyethylene (HDPE) or polypropylene, these plastic containers boast superior corrosion and rust resistance while being lightweight for easier transport and installation.

One of the key advantages of plastic septic tanks is their ease of upkeep. No need for painting or coating like concrete tanks require, they don’t rust and don’t crack from temperature changes or shifting soil either. Additionally, plastic tanks offer great resistance against bacteria growth and damage caused by exposure to external agents like fertilizers.
However, plastic septic tanks do have some drawbacks. They tend to be less durable than concrete tanks and more vulnerable to damage from external forces like falling debris or heavy equipment. Furthermore, these plastic septic tanks may deform under high loads which could result in structural issues.
Fiberglass Septic Tanks
Fiberglass septic tanks are constructed from glass fibers and resin, making them lightweight, highly resistant to corrosion, and offering a longer lifespan than plastic tanks. Furthermore, these customizable tanks come in an array of shapes and sizes to meet specific requirements.

One of the primary advantages of fiberglass septic tanks is their resistance to temperature changes. They can withstand extreme temperatures without cracking, warping or deforming and are also UV-ray proof – making them perfect for outdoor installations.
However, fiberglass septic tanks tend to be more costly than plastic or concrete tanks, which may be an obstacle for certain projects. Furthermore, they are more vulnerable to damage from external forces than concrete tanks and should only be used in areas prone to natural disasters or heavy equipment usage.
Why Are Septic Tanks So Durable?
Septic tanks are built to withstand the rigorous conditions and corrosive substances associated with wastewater treatment. Materials used in their construction are chosen based on their ability to sustain these elements and ensure long-lasting performance.
Contact Greenbar Excavation Now!
Greenbar Excavation is a family-owned business located in Prineville, Oregon that specializes in excavation, grading, and site preparation services. We have been providing these services to customers for over 20 years and are proud of our reputation as one of the best excavation companies in the area. Our team consists of experienced professionals who understand how important it is to provide quality workmanship on every job we take on.
Our Services
At Greenbar Excavation we strive for excellence when working with clients whether they need residential or commercial grade excavations. Our goal is always customer satisfaction no matter what type of job we do; from single home improvements all the way up to major industrial sites requiring extensive earthworks -we guarantee high quality results at competitive prices! With decades worth of combined industry knowledge under belt there’s nothing Greenbar Excavation can’t handle when it comes down getting ground ready for whatever purpose may require!
Don’t look any further, go with the company with your best interest in mind! We offer a multitude of services which are:
- Septic pumping
- Drainage Services
- Landscape prep
- Site grading
- Foundation excavation
- Concrete/ prep finish
- Utility trenching
- Driveways
- Septic tank replacement
- Complete septic system replacement
Call us today with any questions about what septic tank material would be best for you and check out our 5-star reviews!