The Norwesco 750 Gallon One Compartment Septic Tank is an IAPMO-certified, single-chamber polyethylene tank built for residential and light-commercial septic installations where code calls for a listed plastic tank. It holds 750 gallons in a low-profile body measuring 58 in. high by 48 in. wide by 96 in. long, putting the footprint at 48 x 96 inches in the excavation. If you have been searching for a 750 gallon IAPMO septic tank from Norwesco, this is the model that answers the listing requirement directly.
Specifications at a glance
- Capacity: 750 gallons
- Dimensions (H x W x L): 58 in. x 48 in. x 96 in.
- Footprint: 48 x 96 inches
- Material: Polyethylene (color: yellow)
- Brand: Norwesco
- Type: One-compartment septic tank
- Certification: IAPMO listed
- Full water weight: approximately 6,255 lb
- Ships from: Owego, NY
Will it work for your installation
This is a one-compartment design, which matters before you dig. A single-compartment tank handles primary settling and scum separation in one chamber; many jurisdictions and newer code cycles now require or favor a two-compartment configuration for the same dwelling size, so confirm with your local health department or inspector which compartment count your permit specifies. Our guide on single compartment vs two compartment septic tanks walks through where each is allowed and why. Use the Tank Sizing Calculator and the Tank Sizing Guide to match capacity to your daily flow and bedroom count before you commit.
Certification and the cross-border question
The 750 gallon carries IAPMO certification, the plumbing listing most US jurisdictions look for on a plastic septic tank. If your project sits near the Canadian border or falls under CSA jurisdiction, the IAPMO listing and CSA B66 are not interchangeable, and the scope differs. Read Norwesco IAPMO and CSA B66 Septic Tank Approvals before you order so the certification on the tank matches what your authority having jurisdiction will accept.
Weight, handling, and the mistake to avoid
Plan your set with the full picture in mind: at 750 gallons of water the tank and contents reach roughly 6,255 lb, so the excavation, bedding, and backfill have to support a fully loaded vessel. The most common and most expensive mistake on a plastic septic install is improper bedding and backfill: the tank must be set on the manufacturer-specified base and backfilled evenly per the installation instructions, or the shell can deform or float. Inlet and outlet locations, invert heights, and grommet or gasket sizing follow Norwesco's tank-specific installation drawing rather than any pre-set configuration, so confirm those against the technical drawing on this page before you plumb. Follow Norwesco's guidance for bedding depth and anti-flotation requirements in high-water-table sites.
This tank ships LTL freight from the nearest stocking plant, Owego, NY, with freight quoted live to your ZIP code. Get your exact landed freight before you order with the Freight Cost Estimator, or call us at 866-418-1777 and we will confirm compartment count, certification scope, and delivery for your jobsite.
