The Norwesco 1000 gallon one-compartment septic tank is built for installs where vertical clearance is the constraint. At 51 inches tall on a 60 x 127 inch footprint, this low-profile, IAPMO-certified tank fits shallow burial situations where a taller tank would force a deeper, more expensive excavation. It arrives in green polyethylene with loose plumbing, so your installer configures the inlet and outlet to suit the run.
Specs at a glance
- Capacity: 1000 gallon, single compartment
- Dimensions: 51 in H x 60 in W x 127 in L (low-profile septic tank)
- Material / color: green polyethylene
- Full-water load: 8,340 lb (for bedding, backfill, and ballast planning)
- Certification: IAPMO certified
- Documented fittings: outlet; 1" top-of-outlet tee per the technical drawing on this page
- Ships from: Lancaster, OH
Will it work for your install
This is a single-compartment septic tank rated at a nominal 1000 gallons. Filled with water it carries an 8,340 lb load, so plan your bedding, backfill, and ballast against that full-water weight rather than the empty shipping weight. It ships with loose plumbing, and the documented tie-in points are the outlet and a 1" top-of-outlet tee shown on the technical drawing on this page — verify those against your plumbing plan before you set the tank. The pack lists no gaskets, grommets, or bulkhead seals, so confirm gasket and seal requirements for your inlet and outlet tie-ins before install. For figuring drawdown, working volume, and where this 1000 gallon size lands against your daily flow, run the numbers through our Tank Sizing Calculator and review the Tank Sizing Guide. The inlet, outlet, vent, and overflow walkthrough covers how to lay out the loose plumbing cleanly.
Certification and the mistake to avoid
This tank is IAPMO certified, which matters because septic tank approvals are code-driven and jurisdiction-specific. The most common mistake is assuming a US listing carries across the border or that "septic-rated" is universal. It is not. Confirm that IAPMO certification is accepted by your local plumbing or health authority before you order, and if you are installing in Canada, read our breakdown of Norwesco IAPMO and CSA B66 septic tank approvals so you do not buy on the wrong listing. The low-profile design is a feature for shallow installs, not a substitute for verifying burial depth, cover load, and inlet/outlet invert elevations against your site plan.
Freight and ordering
This Norwesco septic tank ships LTL from the Norwesco plant in Lancaster, Ohio. At 127 inches long it exceeds standard parcel limits and has to travel as freight, with cost driven by your destination, so we quote it live to your ZIP rather than rolling it into the list price. Note that the 8,340 lb figure is the full-water load for ballast and bedding planning, not the shipping weight. Get an exact number with our Freight Cost Estimator, and if you are coordinating a low-profile install or hauling logistics, the Norwesco low-profile series field guide walks through field operations and procurement. Questions on fit, certification scope, or delivery? Call us at 866-418-1777.
