The Norwesco 1500 Gallon Preplumbed One Compartment Septic Tank is a low-profile, IAPMO-certified polyethylene tank built for installs where burial depth and cover are constrained. At 51 inches tall with a 157 x 69 inch footprint, it lays out long and shallow instead of deep and narrow. The tank arrives preplumbed with the outlet tee already installed, so you tie into the inlet and outlet rather than fitting hardware in the field.
Will it work for your site
This is a single-compartment, 1500-gallon Norwesco low-profile septic tank molded in green polyethylene. Confirm your local code accepts a single-compartment tank at this capacity for your dwelling size before ordering, and verify the IAPMO listing satisfies your jurisdiction's approval requirements. Per the technical drawing on this page, the outlet is plumbed at a 1-inch top-of-outlet tee; the drawing lists the outlet tee and outlet, so plan your inlet connection in the field. Filled to capacity with water, the tank carries roughly 12,510 lb, so the excavation, bedding, and backfill have to be specified for that loaded weight across the full 69 x 157 inch footprint. Use the Tank Sizing Calculator and the Tank Sizing Guide to match capacity to daily flow before you commit.
The mistake to avoid
The low-profile geometry is the whole point of this tank, and it changes how you bury it. Because the tank is wide and shallow, careful bedding and buoyancy control matter more than with a deep, narrow unit. Bed it level on compacted material across the entire footprint, follow Norwesco's anti-flotation guidance where groundwater is a factor, and do not substitute this single-compartment tank where your code or designer calls for two compartments. If you are installing in Canada or near a cross-border jurisdiction, confirm the certification scope first; see the guide on Norwesco IAPMO and CSA B66 septic tank approvals.
Freight and ordering
This tank ships LTL freight, quoted live to your ZIP, from the nearest Norwesco plant — Shawnee, OK or Washougal, WA. The Freight Estimator selects the nearer ship point by your ZIP, so a West Coast buyer and a Central buyer can see materially different LTL on the same tank — run your ZIP to see your real number. Get an accurate quote before you order with the Freight Cost Estimator or call 866-418-1777. For field-operations and procurement notes on the low-profile series, see the Norwesco low-profile tank series field guide.
