1250 Gallon Plastic Two Compartment Septic Tank - IAPMO Certified

Manufacturer Part

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1250 Gallon Double Compartment Septic Tank

Ace Roto-Mold low profile septic tanks are stronger, easier to install, and less costly than old-fashioned concrete septic tanks – yet they still 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. Each tank carries an individual serial code and is fully document from date of manufacture. Ace Roto-Mold low profile septic tanks are designed and manufactured with rigorous quality controls. Only Ace tanks feature a custom-molded 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 baffles 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. Available in one-compartment and two-compartment designs and are manufactured for containment of liquids up to 1.7 specific gravity. They are also designed to be backfilled empty. These low profile tanks are designed and manufactured to meet wastewater treatment system standards. The 1000, 1250, and 1500 gallon double-compartment low profile septic tanks have been tested by IAPMO to meet the IAPMO/ANSI Z1000-2013 and CSA B66-2016 standards.


• Sectional ribbing to sustain vertical soil pressures up to 500 PSF at a maximum soil depth of 36”

• Manufactured from high-density polyethylene with U.V. stabilizers

• Furnished with two 24” openings for burial lids or access and inspection risers each sealed with a PVC closed cell gasket

• Fitting flats on each end; designed to accept NPT fittings up to 4” (Fittings are optional)

• Designed for below ground installation

• Standard color is yellow

The Low Profile Septic Tanks by Ace Roto-Mold are approved in the following locations (*check for local sanitation regulations/permitting):

  • Alaska
  • Alberta
  • Arkansas
  • British Columbia
  • California*
  • Colorado
  • Delaware
  • Iowa*
  • Missouri
  • Nebraska*
  • Nevada*
  • New Jersey
  • New York
  • North Dakota*
  • Oklahoma
  • Prince Edward Island (2-compartment only)
  • Rhode Island
  • Saskatchewan
  • Texas*
  • Vermont

Disclaimer: Tank is for below ground use only.

Across the United States there are a number of health code requirements that our tanks must meet. These codes are regulated by the state, or county where you are located. To aid you in determining which tank you need, please consult with your local health department.

Technical Drawings
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Key Specs
Gallon Capacity 1250
Lid Size 16"
Length 137"
Width 72"
Height 58"
Weight 658lbs
Material Polyethylene
Manufacturer Ace Roto-Mold
Manufacturer Part Number LPS-1250-2
Shipping Height 58"
Shipping Length 137"
Shipping Weight 658lbs
Shipping Width 72"
Ship Class LTL