A 1500 gallon one compartment low profile septic tank with loose plumbing
The Norwesco 1500 gallon one compartment low profile septic tank, part number 43518, is a green polyethylene septic tank 157 inches long, 69 inches wide and 51 inches tall, weighing 542 lb empty. It is the same length and height as Norwesco's 1250 gallon low profile tanks and gains its extra volume in width, so it goes into the same shallow excavation, dug 69 inches wide. It is a single chamber tank, the plain layout for a conventional system that does not call for two compartments. The plumbing ships loose, a 4 inch gasketed PVC tee assembly for the inlet and another for the outlet, fitted on site so the tees line up with the pipe runs as they are dug. Access is a 20 inch gasketed manway. Norwesco lists the tank as IAPMO approved, rates it to 130 F and backs it with a 5 year warranty. Full of water it holds 12510 lb.
Does your county accept this tank? Call 866-418-1777 with the county and the system design, or get freight to your ZIP and add it to your cart above.
Where it is approved and where it fits
Norwesco's state septic approval list for part number 43518 names Minnesota, New York, Ohio, Oklahoma, Utah and Washington, which follows the plants that build it. A state approval is not a permit: the county or state health department issues that against the system design, so confirm the model with them before you dig, and if your state is not on the list, tell us where the tank is going and we name the part number that is. A 1500 gallon tank is the step up from 1250 where the code sizes on bedrooms or on a garbage disposal, and it is a common choice where a larger house or a longer pumping interval is wanted. If the design calls for two chambers, Norwesco builds the 1500 gallon two compartment tank with loose plumbing in the same footprint; our guide to single compartment versus two compartment septic tanks explains when that is required. Our note on Norwesco IAPMO and CSA B66 septic tank approvals covers what the listing means.
Openings, plumbing and what to check before you buy
- Inlet and outlet. A 4 inch gasketed PVC tee assembly at each end, shipped loose. The gasket seals the pipe in the tank wall; the tee drops the inflow below the scum layer and holds solids back at the outlet. Fit them before the tank goes in the hole, the inlet tee turned to the house line and the outlet tee to the drainfield line.
- Manway. A 20 inch gasketed manway for pumping and inspection. If the burial puts the lid below grade, a riser brings it up; tell us the depth and we quote one with the tank.
- Pipe falls. The inlet sits higher than the outlet, so the house line and the drainfield line are set to the tank. Our tank plumbing walkthrough covers the tie in.
- Drawing. Norwesco's drawing for this tank is linked under Technical Drawing on this page and gives the inlet and outlet heights for the excavation plan.
Setting it
Follow Norwesco's installation instructions and the conditions on your permit. Dig to the drawing, bed the tank on a level, rock free base, fill it with water as you backfill so the walls are supported from both sides, and keep vehicles off the area for good. In wet ground an empty tank wants to float, so do not leave it empty in an open hole overnight. Have the inspector see the tank set and the plumbing connected before the backfill covers it.
Related tanks
The same one compartment tank with the plumbing already installed: the 1500 gallon preplumbed one compartment tank. Two compartments, preplumbed: the 1500 gallon preplumbed two compartment tank. One size down: the 1250 gallon low profile septic tank.
Shipping and receiving
At 157 inches long the tank is an oversize shipment, 542 lb, and it travels on a flatbed or a long trailer from the nearest of six Norwesco plants: Lancaster, Ohio; Owego, New York; Shawnee, Oklahoma; St. Bonifacius, Minnesota; Tooele, Utah; and Washougal, Washington. The listed price is before freight; the freight cost estimator gives the lane cost to your ZIP, or request a written quote for a job that needs paperwork. Have a machine to take it off the truck; at 542 lb and 69 inches wide it is past what two people handle safely. At the tailgate, check 43518 against the bill of lading, count the loose tee assemblies, and look along the ribs for transit damage before signing.
Questions before you order? Call 866-418-1777.
Freight and documents
Ships from: Marked Tree, AR; St. Bonifacius, MN; Owego, NY; Lancaster, OH; Shawnee, OK; Tooele, UT; Washougal, WA; Philippi, WV. 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 43518.
See this tank
Product video. Watch the Norwesco 1500 Gallon Plastic One Compartment Septic Tank with Loose Plumbing and Low Profile Design - IAPMO Certified video (63 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.
