Septic Pump Tank

Septic Pump Tanks

Poly Pump Tanks for Mound Systems, Lift Stations & Pressure Dosing

When a septic system needs to move effluent uphill or dose a drainfield or mound at controlled rates, a septic pump tank (or effluent pump tank) is installed after the septic tank. Our spherical poly pump tanks are engineered for this job with a strong ribbed design, high-quality polyethylene construction and a one-piece, pre-plumbed layout that’s ready for your pump package.

Septic Pump Tank Features

• Engineered ribbed shell: Spherical, ribbed wall design enhances structural integrity and helps the pump tank resist soil and groundwater pressure in challenging conditions.
• High-quality polyethylene: Molded from corrosion-resistant, long-lasting polyethylene that will not rust and is resistant to sulfuric acid decay that can attack concrete tanks.
• One-piece, no-skeleton construction: Pump tanks are molded as a single piece with no internal skeleton to assemble, improving strength and simplifying installation.
• Pre-plumbed and ready for pumps: Inlet, outlet and internal plumbing are factory-installed so the tank arrives ready to accept your pump, floats and control package.
• Lightweight and easy to set: Compared to concrete, these plastic pump tanks are much lighter and easier to move with common jobsite equipment. A flat, even bottom helps with stable bedding in the excavation.
• Designed for high water tables & deep burial: Suitable for high water table sites with maximum bury depth up to 48" to the top of the tank (always follow local code and manufacturer limits).
• Suitable for light lawn traffic: Rated for areas with light lawn traffic only—no vehicle traffic over the tank.
• Green safety lids available: Optional green safety lids provide secure access at grade and blend with landscaping.

Recommended minimum operating fluid level to protect pumps:
— 300 gallon pump tank: minimum 6" of fluid
— 750 & 1,000 gallon pump tanks: minimum 20" of fluid

Septic Pump Sizes

Poly septic pump tanks are available in 300, 750 and 1,000 gallon capacities. Use the chart below to compare outside dimensions and approximate tank weights as you plan transport, excavation and installation depth.

Please Note: Not all Septic Pump Tanks are listed. All dimensions referenced above are available for purchase.

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Septic Tanks Flyer

Applications of Septic Pump Tanks

A septic pump tank is installed after the septic tank whenever effluent needs to be moved or dosed rather than flow by gravity. These poly pump tanks are used in:

• Mound and pressure-dosed systems: Effluent pump tanks provide timed or demand dosing to raised mound systems and pressure distribution fields.
• Lift stations: Sites where the drainfield or treatment unit is uphill from the septic tank and effluent must be lifted to a higher elevation.
• High water table areas: Coastal and wet-soil locations where a spherical, ribbed pump tank helps resist buoyancy and external pressure.
• Larger homes & light commercial projects: Properties with higher flows that require reliable pump chambers and controlled dosing to downstream treatment.

Pair your septic pump tank with a standard or heavy-duty septic tank upstream and the right septic tank accessories for risers, lids and connections to complete the system.

Septic Tank & Pump Tank Accessories

Complete your septic pump tank installation with compatible septic tank accessories, including risers, safety lids, gaskets and connection hardware. These additions make inspection, pumping and long-term maintenance easier while helping keep your septic system sealed and secure.

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