The Norwesco 1000 gallon two-compartment septic tank pairs a low-profile body with IAPMO certification, so it works where a standard-depth tank would not fit and where local plumbing code expects a listed product. The two-compartment design splits the tank internally to separate primary settling from clarified flow, which is what many jurisdictions require for a single-tank septic system at this capacity. It ships with loose plumbing, so your installer sets the inlet and outlet penetrations to match the field.
- Capacity: 1000 gallon nominal, two compartments
- Dimensions: 51" H x 60" W x 127" L (60" x 127" footprint)
- Material / color: Green polyethylene
- Listing: IAPMO certified
- Full water weight: ~8,340 lb
Will it work for your install
At 51" tall on a 60" x 127" footprint, this tank installs in shallower excavations and tighter cover situations than a taller 1000-gallon model. The technical drawing on this page depicts a 20" access lid and one outlet - and that is what the drawing shows, with no pre-plumbed inlet. Because the tank ships with loose plumbing, your installer sets the inlet and outlet grommets and seals in the field to match your layout and code (those seals are installer-supplied, not included). Confirm the lid and outlet positions against your site plan before you dig. Full, the tank holds roughly 8,340 lb of water, which is the load your bedding and backfill must support - plan the excavation and follow Norwesco's installation depth and anti-flotation guidance so the empty tank does not float in a high water table. Because compartment count is code-dependent, check the single vs. two-compartment requirement for your county; our guide on single compartment vs. two compartment septic tanks walks through where each is allowed, and our tank plumbing system design walkthrough covers tying in the inlet, outlet, and vent.
IAPMO certification and code scope
This tank carries IAPMO certification, the listing most US plumbing-code jurisdictions look for on a plastic septic tank. If you are installing in Canada or near a cross-border jurisdiction, the certification scope matters - read our breakdown of Norwesco IAPMO and CSA B66 septic tank approvals before you specify. The mistake to avoid is assuming any "septic tank" passes inspection: confirm with your local health or plumbing authority that an IAPMO-listed plastic two-compartment tank is accepted in your jurisdiction, and that the low-profile depth meets the minimum cover and inlet/outlet invert requirements for your drain field.
Sizing and the low-profile series
If you are still confirming capacity for your daily flow and bedroom count, run the numbers with our Tank Sizing Calculator and Tank Sizing Guide. This low-profile body is part of Norwesco's shallower-footprint lineup; if you also handle pumping or hauling, our Norwesco low-profile hauling tank series guide covers the field-operations and procurement side of the same low-profile platform.
This 1000-gallon low-profile septic tank ships LTL freight, quoted live to your ZIP. It ships from the nearest Norwesco plant among Griffin, GA; Lancaster, OH; Shawnee, OK; St. Bonifacius, MN; Tooele, UT; and Washougal, WA - and which plant is closest to you is what drives your LTL quote, so distance and your ZIP determine the rate. Get a freight estimate with our Freight Cost Estimator, or call 866-418-1777 to confirm the nearest stocking plant and lead time.
