The Norwesco 1000 Gallon Two Compartment Septic Tank pairs a 1000 gallon working capacity with a low-profile shell that measures 51" tall by 60" wide by 127" long. That long, shallow footprint (60.0 x 127.0 inches) is the whole point of this tank: it drops into a shallower excavation than a tall vertical septic tank, which matters where you hit a high water table, rock, or a shallow cover requirement and cannot dig deep. It is built for two-compartment septic service, so the first compartment lets heavier solids settle out before clearer effluent moves on to the second compartment ahead of the outlet.
Will it work for my install
This is a green polyethylene septic tank built for 1000 gallon two-compartment service. Filled to capacity with water it weighs about 8,340 lb, so size the excavation, bedding, and anti-flotation backfill for that loaded weight rather than the empty shell. Because the 60 x 127 footprint is long and shallow, it presents more buoyant surface area in a high-water-table install (the exact scenario this low-profile design targets), so anti-flotation provisions matter more here than on a tall vertical tank. The technical drawing on this page shows the layout: a 20" lid for access and pumping, and an outlet. The pack does not specify inlet or outlet pipe seals, grommets, or connection method, so confirm those at order time. Verify the outlet invert elevation against your distribution and drainfield plan before you set the tank, and confirm your local health authority accepts a poly two-compartment unit in your jurisdiction. If you are weighing a single versus two-compartment layout, the single vs two compartment septic tank guide walks through the trade-offs, and the Tank Sizing Guide and Tank Sizing Calculator help you confirm 1000 gallons fits your daily flow.
Approvals and the mistake to avoid
The most common mistake on a poly septic tank is assuming an approval that does not apply to your area. Septic approval is state and county specific, and Canadian projects work under different standards than US plumbing codes. Before you buy, read the Norwesco IAPMO and CSA B66 septic tank approvals overview to understand what carries across the border and what does not, then confirm acceptance with your permitting office. The low-profile design also influences cover depth and riser selection, so size your access risers to your finished grade rather than the bare tank top.
Freight and how to order
This Norwesco low profile 1000 gallon two compartment septic tank ships LTL freight from whichever of two Norwesco plants is closer to your delivery ZIP, either Shawnee, OK or Washougal, WA. Having two shipping origins can materially lower LTL cost on a tank this size, so get a live freight quote to your exact ZIP with the Freight Cost Estimator, or call us at 866-418-1777 and we will confirm the nearest shipping plant, lift-gate or job-site needs, and lead time before you commit. For procurement and field logistics on this series, the Norwesco low-profile series field operations and procurement guide covers offloading and handling a long, shallow tank.
