The Norwesco 1000 Gallon Two Compartment Septic Tank is a green polyethylene tank engineered for shallow-burial installations where headroom is tight. At 51 inches tall with a 60 x 127 inch footprint, this low-profile design sits in a wider, shallower excavation than a conventional tall septic tank, which matters when you are working above a high water table, over bedrock, or under sloped grade. It carries IAPMO certification, the listing most plumbing inspectors look for on a poly septic tank, and it arrives with loose plumbing so your installer sets inlet and outlet tees to the local code rather than fighting fixed factory stubs. Ships from Lancaster, OH; LTL freight quoted live to your delivery ZIP.
Will this 1000 gallon low-profile septic tank work for my site?
The two-compartment layout does the primary settling and clarifying work inside a single 1000 gallon shell, with the baffle separating the solids-heavy first stage from the cleaner second stage feeding your drainfield or pump chamber. That clarifying step, paired with the IAPMO listing, is the core reason to spec this tank. The footprint is 60.0 x 127.0 inches and overall height is 51 inches, so confirm your excavation length and your invert depths before you dig. Run your daily flow against the tank-sizing math first if you are matching this to a bedroom count or fixture load; the Tank Sizing Calculator and Tank Sizing Guide walk you through it.
Plumbing and code: get the IAPMO listing right
Because the plumbing ships loose, the inlet and outlet tee placement, vent tie-in, and any effluent filter are set during installation. Read our Tank Plumbing System Design walkthrough for inlet, outlet, vent, and overflow tie-in detail so the field assembly matches the certified configuration. If you are deciding between this unit and a single-chamber tank, the single compartment vs two compartment septic tank guide explains where the two-compartment design earns its keep. Buyers in Canada or near the border should review the Norwesco IAPMO and CSA B66 approvals guide, since the IAPMO listing and CSA B66 cover different code regimes and inspectors will not accept one as a substitute for the other.
The mistake to avoid
The most common error on a low-profile septic install is treating the shallow shape as a license to skip uniform bedding and full backfill support. Filled to capacity this tank holds roughly 8,340 pounds of water, and that load rides on evenly compacted bedding across its 60 x 127 inch base plus proper sidewall backfill to handle earth and saturation pressure; void pockets under or beside the tank are where shells deflect. Follow Norwesco's burial instructions for bedding, backfill lift depth, and the water-filling-during-backfill sequence. The same low-profile burial discipline applies to Norwesco's hauling-tank family, covered in the Norwesco Low-Profile Hauling Tank Series guide.
This septic tank ships LTL freight from Norwesco's plant in Lancaster, OH, quoted live to your delivery ZIP. Get an exact number with our Freight Cost Estimator, or call 866-418-1777 and we will quote it for you. Once you have your invert depths and excavation dimensions confirmed against the technical drawing on this page, we can lock in delivery to your site.
