A 1500 gallon low profile one compartment septic tank with the plumbing shipped loose
The Norwesco 1500 gallon one compartment septic tank with loose plumbing and low profile design, part number 43546, is a green polyethylene septic tank 157 inches long, 69 inches wide and 51 inches tall, weighing 512 lb empty. Low profile means the volume runs along the trench rather than down into it: at 51 inches tall the tank goes into a shallower hole than a standard 1500 gallon tank, which matters where rock, a high water table or a shallow sewer line keeps the excavation short. It comes with a 4 inch gasket and tee assembly for the inlet and another for the outlet, shipped loose so the installer fits them on site, and a 20 inch manway on top. Norwesco lists the tank as IAPMO approved and backs it with a 5 year warranty; the service limit is 130 F.
Does your county accept it? Call 866-418-1777 with the county and the permit requirement, or get freight to your ZIP and add it to your cart above.
Where it goes and who signs off
A septic tank is a permitted installation everywhere, and the permit is issued locally against a state list of approved tanks. A single compartment tank is the traditional design and is still accepted in many jurisdictions; others now ask for two compartments on new construction. Take the part number to the county health or environmental office before you order, and if your county wants two compartments, this size is built that way and linked below. Our guide to Norwesco IAPMO and CSA B66 septic tank approvals explains what the IAPMO listing covers and what it does not. For the plumbing itself, from the house sewer through the tank to the drainfield, our inlet, outlet, vent and tie-in walkthrough is the place to start.
What to check before you buy
- The hole. 157 inches long and 69 inches wide, plus room around it for bedding and compaction. The 51 inch height plus the cover your code requires sets the depth. Check that depth against the sewer line leaving the house: the inlet has to sit below the line with fall to spare.
- Inlet and outlet. Both are 4 inch gasket and tee assemblies, shipped loose. Loose plumbing is an advantage when the site is not fully designed yet: the installer sets the tees once the inlet and outlet elevations are known. Your 4 inch sewer pipe connects to each through the gasket. Keep the gaskets with the tank, not in the truck cab.
- Access. One 20 inch manway. Most codes require access at grade for pumping, so plan on a riser and lid to bring the opening to the surface; tell us the burial depth and we will quote the riser with the tank.
- Groundwater. An empty polyethylene tank in wet ground floats. Follow Norwesco's installation instructions on bedding, backfill and filling, and never leave the tank pumped empty when the water table is high.
Norwesco's drawing for this tank is linked on this page under Technical Drawing. It shows the inlet and outlet positions, the manway location and the rib pattern.
This size in other versions
Norwesco builds this low profile size several ways. One compartment with the plumbing already installed: the 1500 gallon preplumbed one compartment low profile septic tank. Two compartments, preplumbed: the 1500 gallon preplumbed two compartment low profile septic tank. Two compartments with loose plumbing: the 1500 gallon two compartment low profile septic tank with loose plumbing. One size down in the same family: the 1250 gallon low profile septic tank. The differences are compartments, how the plumbing arrives and the approvals each part number carries, so match the part number to your permit, not the gallons.
Shipping and receiving
The tank ships from Norwesco's Griffin, Georgia plant as an oversize LTL load, 157 by 69 by 51 inches and 512 lb, which means a flatbed or a trailer with the length for it rather than a box van. The listed price is before freight; the freight cost estimator gives the lane cost to your ZIP, and for a job that needs paperwork you can request a written quote. Have a machine on site to lift it off; the driver does not unload a tank this size by hand. Before the truck leaves, check the part number against 43546 on the bill of lading, walk the length of the tank for gouges or a cracked rib, look inside through the manway, and count the loose parts: two tee assemblies and their gaskets. Set the tank in the hole the same day if you can.
Questions before you order? Call 866-418-1777 with the county and the sewer line depth.
Freight and documents
Ships from: Griffin, GA. LTL freight is quoted to your ZIP with the freight cost estimator or by phone at 866-418-1777. The listed price is before freight.
Technical drawing (PDF) for Norwesco 43546.
See this tank
Product video. Watch the Norwesco 1500 Gallon One Compartment Septic Tank with Loose Plumbing and Low Profile Design video (67 seconds) with dimensions, fittings and shipping notes.
Ready to order?
Add it to your cart at the top of this page, get LTL freight to your ZIP, request a written quote, or call 866-418-1777. The listed price is before freight.
