How to Choose the Right Plastic Septic Tank for Your Home?

Selecting the right plastic septic tank for your home is a crucial decision that affects not only your household's waste management but also the overall health and sustainability of your septic field. The process of choosing the septic solution involves understanding various factors including size, durability, installation requirements, and maintenance needs.

Plastic septic tanks are increasingly popular due to their durability, ease of installation, and cost-effectiveness. Made from high-density polyethylene (HDPE) or polypropylene, these tanks are designed to be resistant to corrosion and chemical damage, making them a long-lasting solution for waste management.

Key Factors to Consider

Size and Capacity

Choosing a plastic septic tank is determining the appropriate size and capacity for your household. The size of the tank is directly related to the number of occupants in your home and the amount of wastewater generated. Typically, a family of four would require a tank with a capacity of at least 1,000 gallons. However, larger families or homes with higher water usage might need a tank with a greater capacity.

Site Evaluation and Soil Type

Before installing a plastic septic tank, it’s essential to evaluate the site where the tank and the septic field will be located. The soil type, topography, and groundwater level all play a role in the effectiveness of your septic system. Conducting a percolation test can help determine the soil’s absorption rate, ensuring that the septic field will function properly and prevent any potential overflow or backups.

Durability and Material Quality

Plastic septic tanks are known for their durability, but the quality of the material can vary. Ensure that the tank is made from high-density polyethylene (HDPE) or another durable plastic that can withstand external pressures and resist corrosion. The thickness of the tank walls is also a critical factor; thicker walls generally mean a more robust and long-lasting tank.

Installation and Location

The installation process of a plastic septic tank is typically more straightforward than that of concrete tanks due to their lighter weight. However, proper installation is crucial to prevent issues such as tank movement or structural damage. The location of the tank in relation to your home, the septic field, and other environmental factors should be carefully planned. Regulations often require that septic tanks be a certain distance from water sources, buildings, and property lines.

Maintenance and Accessibility

One of the advantages of plastic septic tanks is their lower maintenance requirements compared to other materials. However, regular maintenance is still necessary to ensure the system operates efficiently. When choosing a tank, consider features such as an accessible septic cover that allows for easy inspection and pumping. Regularly scheduled maintenance and inspections can help prolong the life of your septic system and prevent costly repairs.

Benefits of Plastic Septic Tanks

Cost-Effective:

Plastic septic tanks are generally less expensive than concrete or fiberglass alternatives. Their lighter weight reduces transportation and installation costs, making them a more affordable option for many homeowners.

Corrosion Resistant:

Unlike metal or concrete tanks, plastic septic tanks are resistant to rust and corrosion. This resistance makes them particularly suitable for areas with acidic or alkaline soils that can damage other types of tanks.

Ease of Installation:

The lightweight nature of plastic septic tanks makes them easier to handle and install, even in challenging locations. This ease of installation can result in significant savings in labor costs and time.

Durability:

Despite their lighter weight, plastic septic tanks are incredibly durable and can last for decades with proper maintenance. Their flexibility also means they are less likely to crack under pressure from soil movement or heavy loads.

Common Issues and Solutions

Root Intrusion:

One potential issue with any septic system is root intrusion. Trees and shrubs planted too close to the septic tank or septic field can invade the system and cause blockages. To mitigate this risk, ensure that no large plants are located near the septic components and consider installing root barriers if necessary.

Tank Settling:

Improper installation can cause the tank settling unevenly, which can cause cracks or leaks. To prevent this, ensure that the tank is installed on a stable, well-prepared base and that the soil is adequately compacted around the tank.

Septic Field Maintenance:

The septic field, also known as the drain field or leach field, is a critical component of your septic system. Proper maintenance of the septic field is essential to ensure that wastewater is effectively filtered and absorbed into the soil.