Poly Septic Tanks



Manufactured from high-density polyethylene with U.V. inhibitors. Designed for permanent sub-grade installation. Available in dual compartments between 1000 GAL to 1500 GAL. Single-compartment holding tanks from 300 GAL to 750 GAL. Manufactured for containment of liquids up to 1.7 specific gravity. Ready for pickup or delivery.

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Designed for permanent sub-grade installation, poly (plastic) septic tanks are perfect for many applications. Available in dual compartments starting at 500 GAL to 1500 GAL. Single compartment holding tanks starting at 125 GAL to 1500 GAL.

Poly Septic Tanks are stronger, easier to install, and less costly than old-fashioned concrete septic tanks. They offer the quality construction and safety you expect. Manufactured from high-density polyethylene with U.V. inhibitors, these tanks utilize a horizontal flow designed for below-ground installations up to 36 inches.

The baffle system slows the flow of wastewater and directs it to the middle of the tank so wastewater can separate from solids. An outlet baffle allows the partially treated liquids to flow out for further treatment. Advantages of this baffle design include added strength, versatility, and ease of installation. Plastic Septic tanks are available in one-compartment and two-compartment designs. Manufactured for containment of liquids up to 1.7 specific gravity. These tanks are designed and manufactured to meet wastewater treatment system standards. 1000, 1250, and 1500 gallon double-compartment septic tanks have been tested by IAPMO to meet the IAPMO/ANSI Z1000-2013 and CSA B66-2016 standards.

  • Withstands up to 500 PSF load pressure.
  • Divider panels provide flow control.
  • Exclusive deep rib design.
  • Unique locking/gasket design.
  • Designed to meet strict state and local regulations.
  • Plumbed to dealer preference.

Want to learn even more about the basics of Septic Tanks? We’ve got some great resources to help, including Considerations & Advice When Shopping For Poly Septic Tanks and How to Calculate the Right Size Septic Tank!

PART NO. SEPTIC TANKS Weight Dimensions
AST-0300-1 300 Gallon Pump Tank 137 54×56
AST-0500-1 500 Gallon Pump Tank 197 63×74
14-2350PF (500 USG) 500 Gallon Dual Compartment 109.1″x46.1″x52.4″
AST-0750-1 750 Gallon Single Compartment 259 60x70x60
14-3850PF (880 USG) 880 Gallon Dual Compartment 119.8″x56.9″x51.7″
AST-1000-2 1000 Gallon Two Compartments 448 60x101x60
AST-1250-2 1250 Gallon Two Compartments 492 58x118x72
AST-1500-2 1500 Gallon Two Compartments 630 58x137x72

Still searching for the correct cistern or septic tank? View the rest of our tank options here. You can also view Poly Septic frequently asked questions.

*Always check with your municipal requirements prior to installation.

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