Norwesco Double Compartment Septic Tank with Gaskets and Tees, 1000 Gallon, Yellow

The Norwesco 1000-Gallon Double-Compartment Ribbed Septic Tank is engineered to provide reliable wastewater management for residential septic systems. Designed for strength, efficiency, and long-term performance, it offers effective solids separation in a compact, installation ready design. Manufactured from high quality polyethylene, this tank is created using a rotational molding process that forms a seamless, one piece structure. This eliminates weak points and delivers a fully watertight tank that resists cracking, leakage, and environmental stress. Unlike concrete or steel tanks, polyethylene will not rust, corrode, or degrade when exposed to sewage gases or harsh soil conditions. Its reinforced ribbed design enhances structural integrity by evenly distributing ground pressure across the tank body. This added strength improves underground stability and supports long term soil load. The double compartment feature promotes improved wastewater flow and treatment, making it ideal for new home constructions or septic system replacements. Each tank includes a factory installed watertight lid with stainless steel screws and a gasket to ensure a dependable seal. The included integrated gaskets and tees help speed up installation, while compatible risers and manhole extensions allow access to be brought to grade and aligned with local code requirements.