The Norwesco 1000 Gallon Preplumbed One Compartment Septic Tank is built for installs where overhead clearance and burial depth fight you. At 51 in H x 60 in W x 127 in L, this low-profile body sits in a shallower excavation than a tall 1,000-gallon tank, which matters when you hit rock, a high water table, or a gravity line that needs a specific invert. It is rotationally molded from green polyethylene, arrives preplumbed with the outlet tee already set, and carries IAPMO certification for plumbing-code acceptance.
Will it work for your install
Capacity is a true 1,000 gallons on a 60 x 127 inch footprint, only 51 inches tall. The drawing documents the outlet tee (1 in top-of-tee reference); confirm the inlet location and both inverts against the technical drawing on this page before you set the tank, because low-profile bodies run their plumbing close to the top and leave far less room to drop the outlet than a conventional tank. Filled with water this tank weighs about 8,340 pounds, so the bedding and backfill have to be engineered for that load on the 60 x 127 inch footprint, not just leveled sand. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm 1,000 gallons matches your daily flow and reserve before you commit to the excavation.
IAPMO certification and code acceptance
This tank is IAPMO certified, which is the listing many jurisdictions look for when they accept a polyethylene septic tank under the plumbing code. Acceptance is local: confirm with your county or health department that an IAPMO-listed plastic tank is approved for your site, and that this low-profile model meets their burial-depth and structural requirements. Our guide on Norwesco IAPMO and CSA B66 Septic Tank Approvals walks through how that listing maps to US plumbing codes versus Canadian scope. If you run a pumping or hauling operation, the Norwesco Low-Profile Hauling Tank Series field guide covers how these low-profile bodies handle in the field.
The mistake to avoid
The most common error on a low-profile septic tank is setting it without verifying the outlet invert and the cover-soil depth first. Because the body is only 51 inches tall, you have far less room to drop the outlet than on a conventional tank, and getting the gravity slope wrong means digging it back out. Lock your inlet and outlet elevations against the technical drawing, then verify the IAPMO listing satisfies your inspector, before the tank is in the hole.
This 1,000 gallon Norwesco low-profile septic tank ships LTL freight from the nearest Norwesco plant, so a Western buyer ships from Washougal, WA and a Central or Eastern buyer ships from Shawnee, OK - which is exactly why the live ZIP quote matters. Get your freight number through our Freight Cost Estimator or call 866-418-1777 to confirm fittings, gasket details, and IAPMO acceptance for your county before you order.
