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Septic Pump Tanks - 251 to 500 Gallons

Reliable Wastewater Solutions for Low Drainage Soils
When gravity alone isn’t enough to move wastewater, septic pump tanks are the perfect solution. Designed for properties with elevation changes, poor soil absorption, or uneven terrain, these tanks use pumps to efficiently move effluent from the septic tank to the drain field. Whether for residential, agricultural, or commercial use, septic pump tanks ensure effective wastewater treatment even in the most challenging environments....


Our sphere pump tanks are designed to be used as a holding tank or pump tank and they can remain in the ground when empty. Our septic pump tanks come in sizes ranging from 200 to 500 gallons and are built by trusted manufacturers like Snyder Industries, Norwesco, and Ace Roto-Mold. Made with high-quality polyethylene, they’re durable, watertight, and designed for long-term use.

Why Choose Septic Pump Tanks?

Perfect for Challenging Sites
Perfect for Challenging Sites

Ideal for properties with elevation issues or poor soil absorption that make gravity flow impractical. If your property has a drain field that is uphill from your septic tank, a pump tank is useful to move the effluent to the drain field.

Efficient Wastewater Movement
Efficient Wastewater Movement

Equipped with molded pump stands, septic pump tanks ensure reliable movement of effluent to the drain field.

Long-Term Durability
Long-Term Durability

Made with seamless, rotationally molded polyethylene, these tanks resist impact, corrosion, and sewage gases.

Versatility Across Applications
Versatility Across Applications

Suitable for both small residential properties and larger commercial systems requiring high-capacity storage and flow.

Eco-Friendly Design
Eco-Friendly Design

By regulating effluent flow, septic pump tanks prevent oversaturation and help maintain environmentally safe wastewater treatment.

Ready for Installation
Ready for Installation

Features like molded-in tie-downs, pre-installed fittings, and watertight domed lids simplify installation and ensure secure use.

Ideal Applications for Septic Pump Tanks

Residential Properties with Elevation Issues
Residential Properties with Elevation Issues

For homes where the drain field is located uphill from the septic tank, making gravity flow impossible.

Sites with Poor Soil Conditions
Sites with Poor Soil Conditions

A great solution for properties with rocky terrain, clay-heavy soil, or limited soil absorption.

To Handle High Volumes of Wastewater
To Handle High Volumes of Wastewater

A property may generate more wastewater than a standard septic system can handle. A pump tank can help to regulate the flow and prevent overloading the drain field.

Small Commercial Applications
Small Commercial Applications

Perfect for businesses like offices, schools, and small agricultural properties that require reliable wastewater pumping.

Eco-Sensitive Locations
Eco-Sensitive Locations

Septic pump tanks regulate effluent flow to protect groundwater and prevent oversaturation in environmentally sensitive areas.

Temporary Installations
Temporary Installations

Ideal for temporary or emergency wastewater management needs at construction sites or seasonal properties. Could also work for cabins.

Key Features of Tank Depot’s Septic Pump Tanks

  • Capacity Options: Available in 200, 300, 500, and 525 gallons to suit a variety of wastewater needs.
  • Integrated Pump Stands: Molded into the bottom of the tank for easy installation and secure pump placement.
  • Molded-In Tie-Downs: Secure the tank in place during and after installation (available on certain models).
  • Seamless Construction: Rotationally molded one-piece designs ensure watertight performance and durability.
  • Access Manways: Tanks feature 20” or 24” manhole covers with gaskets for a secure and watertight seal.
  • Safe Underground Use: These tanks are specifically designed for below-ground installations and remain stable, even when empty.

Durability and Maintenance

  • Inspect Regularly: Check the pump and electrical components for signs of wear or damage.
  • Clean the Pump: Regularly remove debris or buildup to prevent clogs or malfunctions.
  • Installation: These pump tanks should not be installed in high water table or high clay areas.
  • Schedule Pumping: Follow recommended schedules based on the tank size and daily wastewater load.
  • Follow Installation Guidelines: Ensure proper backfill (e.g., pea gravel) and always consult local health codes for compliance.

Find Your Septic Pump Tank Today

At Tank Depot, we make it easy to find the right septic system for complex properties. Whether you need a compact 200-gallon septic pump tank for a residential system or a 500-gallon tank for a commercial application, we’ve got the options you need. Ready to get started? Browse our selection of septic pump tanks below or contact our experts today for help choosing the perfect tank for your project.

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DISCLAIMER: Here at Tank Depot we work hard to stay up to date on the latest rules and regulations for each state, however, please confirm with your local septic installer or sanitarian that the products you select are approved by your state and county for septic use in your area.

12 Items

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Capacity Name Diameter Length Width Height SKU Price
Buy 300 Gallon Plastic Underground Septic Pump Tank Not Plumbed by Snyder Industries for only $813.00 300 Gallons Buy 300 Gallon Plastic Underground Septic Pump Tank Not Plumbed by Snyder Industries for only $813.00 Snyder Industries 300 Gallon Plastic Underground Septic Pump Tank Not Plumbed 49 49 49 50 SII-5260000W94201 $813.00
Buy 300 Gallon Deep Bury Septic Pump Tank by Norwesco for only $1,225.00 300 Gallons Buy 300 Gallon Deep Bury Septic Pump Tank by Norwesco for only $1,225.00 Norwesco 300 Gallon Deep Bury Septic Pump Tank 51 51 51 51 N-44370 $1,225.00
Buy Florida Only 300 Gallon Plastic Septic Pump Tank by Norwesco of Green color for only $1,032.00 300 Gallons Buy Florida Only 300 Gallon Plastic Septic Pump Tank by Norwesco of Green color for only $1,032.00 Norwesco Florida Only 300 Gallon Plastic Septic Pump Tank 51 51 51 50 N-44789 $1,032.00
Buy 300 Gallon Plastic Septic Pump Tank Preplumbed by Snyder Industries of Black color for only $955.00 300 Gallons Buy 300 Gallon Plastic Septic Pump Tank Preplumbed by Snyder Industries of Black color for only $955.00 Snyder Industries 300 Gallon Plastic Septic Pump Tank Preplumbed 48.5 48.5 48.5 53 SII-ST11S $955.00
Buy 300 Gallon Plastic Septic Pump Tank by Ace Roto-Mold for only $756.00 300 Gallons Buy 300 Gallon Plastic Septic Pump Tank by Ace Roto-Mold for only $756.00 Ace Roto-Mold 300 Gallon Plastic Septic Pump Tank 54 54 54 56 A-AST-0300-1 $756.00
Buy 300 Gallon Septic Pump Tank by Norwesco of Black color for only $767.00 300 Gallons Buy 300 Gallon Septic Pump Tank by Norwesco of Black color for only $767.00 Norwesco 300 Gallon Septic Pump Tank 54 54 54 54 N-41319 $767.00
Buy 300 Gallon Plastic Septic Pump Tank by Ace Roto-Mold for only $553.00 300 Gallons Buy 300 Gallon Plastic Septic Pump Tank by Ace Roto-Mold for only $553.00 Ace Roto-Mold 300 Gallon Plastic Septic Pump Tank 54 54 54 56 A-AST-0300-1R $553.00
Buy 500 Gallon Plastic Septic Pump Tank by Ace Roto-Mold for only $989.00 500 Gallons Buy 500 Gallon Plastic Septic Pump Tank by Ace Roto-Mold for only $989.00 Ace Roto-Mold 500 Gallon Plastic Septic Pump Tank 63 63 63 74 A-AST-0500-1 $989.00
Buy 500 Gallon Plastic Septic Pump Tank by Snyder Industries for only $1,215.99 500 Gallons Buy 500 Gallon Plastic Septic Pump Tank by Snyder Industries for only $1,215.99 Snyder Industries 500 Gallon Plastic Septic Pump Tank 60 60 60 63 SII-ST21S $1,215.99
Buy 500 Gallon Plastic Septic Pump Tank by Snyder Industries for only $862.00 500 Gallons Buy 500 Gallon Plastic Septic Pump Tank by Snyder Industries for only $862.00 Snyder Industries 500 Gallon Plastic Septic Pump Tank 60 60 60 63 SII-PT2S $862.00
Buy 500 Gallon Plastic Septic Pump Tank by Ace Roto-Mold for only $686.00 500 Gallons Buy 500 Gallon Plastic Septic Pump Tank by Ace Roto-Mold for only $686.00 Ace Roto-Mold 500 Gallon Plastic Septic Pump Tank 63 63 63 74 A-AST-0500-1R $686.00
Buy 500 Gallon Plastic Septic Pump Tank by Norwesco of Black color for only $1,021.00 500 Gallons Buy 500 Gallon Plastic Septic Pump Tank by Norwesco of Black color for only $1,021.00 Norwesco 500 Gallon Plastic Septic Pump Tank 64 64 64 67 N-40785 $1,021.00
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