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Poly Septic Tanks



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.

Ace Roto-Mold 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, Ace Roto-Mold tanks utilize a horizontal flow designed for below-ground installations up to 36 inches. Ace Roto-Mold uses rigorous quality controls throughout the design and manufacturing of Poly Septic Tanks. The trapezoidal deep-rib design and interior baffle system make Ace Tanks the industry choice. Only Ace tanks feature a custom-moulded gasket in the lid. Manufactured from extruded Nitrile rubber, the gasket snaps into the lid and ensures a watertight seal. Our exclusive lid design locks in place with nylon ties, eliminating the need for metal fasteners that can corrode and fail.

Ace’s unique tank 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 Ace’s 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.


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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