Septic Tanks | Plastic Septic Tanks & Pump Tanks | Tri State Fertilizer Equipment

Poly Septic Tanks

Our poly septic tanks offer a durable, lightweight alternative to traditional concrete septic tanks, making them easier to transport and install while providing long-lasting performance. Manufactured from high-density polyethylene (HDPE) with UV inhibitors, these plastic septic tanks are designed for underground wastewater applications and can be installed with up to 36 inches of cover. Available in one- and two-compartment configurations, these tanks feature a durable ribbed design, secure lid fastening system, reinforced inlet and outlet connections, and an internal baffle system that promotes effective wastewater separation. Models are designed to contain liquids up to a 1.7 specific gravity, and select 1,000-, 1,250-, and 1,500-gallon two-compartment tanks have been tested to meet IAPMO/ANSI Z1000 and CSA B66 standards.

Part Number Capacity / Description Weight (lbs.) Dimensions
AST-0300-1 300 Gallon Pump Tank 137 54 × 56
AST-0300-1R 300 Gallon Reclaimed Pump Tank 137 54 × 56
AST-0500-1 500 Gallon Pump Tank 197 63 × 74
AST-0500-1R 500 Gallon Reclaimed Pump Tank 197 63 × 74
AST-0750-1 750 Gallon, Single Compartment 259 60 × 70 × 60
AST-0750-1R 750 Gallon Reclaimed Septic Tank 259 60 × 70 × 60
AST-1000-1 1,000 Gallon, Single Compartment — 59 × 97 × 75
AST-1000-21,000 Gallon, Two Compartment — 59 × 97 × 75
AST-1250-11,250 Gallon, Single Compartment — 59 × 115 × 75
AST-1250-21,250 Gallon, Two Compartment — 59 × 115 × 75
AST-1500-11,500 Gallon, Single Compartment — 59 × 134 × 75
AST-1500-21,500 Gallon, Two Compartment — 59 × 134 × 75