Skip to main content

Norwesco Below Ground Tanks

Norwesco Below Ground Tanks

Norwesco below ground tanks are one-piece polyethylene tanks made to be buried. There are two lines: Norwesco septic tanks for wastewater, and Norwesco underground water tanks for water storage. Both are seamless, and both are made only for burial.

Choose your line

  • Norwesco Plastic Septic Tanks: septic tanks from 500 to 1,500 gallons in one or two compartments, pump tanks from 200 to 525 gallons, and versions made for Florida, the Carolinas and Canada.
  • Norwesco Underground Water Tanks: water cisterns, multi-use underground tanks and large underground tanks, from 225 to 20,000 gallons.

What people use them for

  • New and replacement septic systems for homes and cabins
  • Pump tanks that feed a drain field or mound system
  • Buried cisterns for well water, hauled water or rainwater
  • Water reserves for fire protection and livestock

Sizes and features

Most of these tanks have a 20 inch manhole on top. To bring a lid up to grade, Norwesco makes 6, 15 and 24 inch manhole extensions and risers with lids. The Riser & Extension Options line on each tank page lists the parts that fit and how many you need. You'll find them in Norwesco Accessories. Check each product's specifications for the exact dimensions, inlet and outlet, and certifications.

Before you order

  • Below ground only. Septic and underground tanks are not for above-ground use. For a tank that sits on a pad, see Norwesco Vertical Water Tanks.
  • Check your permit. Septic tanks must be approved where they're installed. The State Septic Approval line on each septic tank page lists the states.
  • Follow the install guide. Dig, bed and backfill the way Norwesco's installation instructions for your tank call for.
  • Not for fuel. Don't use these tanks for gasoline, diesel or any other fuel.

Questions we get

Can a septic tank be used for water?
Use a water tank for water and a septic tank for wastewater. The underground water cisterns are molded from FDA-compliant polyethylene.

Are Norwesco septic tanks IAPMO certified?
Many are. Check the Certifications line and the product name on each tank page.

Where does my tank ship from?
Your tank ships from the Norwesco location nearest you that makes that size. The freight estimator on each tank page quotes delivery to your ZIP.

Call 866-418-1777 for help choosing a tank, or get freight to your ZIP on any tank page.

category
Norwesco Underground Water Tanks
category
Norwesco Plastic Septic tanks
!