Norwesco 1250 Gallon Plastic Two Compartment Septic Tank with Loose Plumbing and Low Profile Design - IAPMO Certified

Where it is approved and where it fits

This is the broadly approved version of Norwesco's 1250 gallon two compartment tank. Norwesco's state septic approval list for part number 43503 names Alabama, Alaska, Arkansas, Colorado, Connecticut, Delaware, Georgia, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New York, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Dakota, Tennessee, Texas, Vermont, Virginia, Washington, West Virginia, Wisconsin and Wyoming. 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. A 1250 gallon tank is a common size for a three or four bedroom house where the code sizes on bedrooms, and our guide to single compartment versus two compartment septic tanks explains when the second chamber is required and when it is simply better. Our note on Norwesco IAPMO and CSA B66 septic tank approvals covers what the listing itself means.

Openings, plumbing and what to check before you buy

1. Inlet and outlet. A 4 inch gasketed PVC tee assembly at each end, shipped loose. 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. The gasket seals the pipe in the wall; the tee keeps the scum layer where it belongs.
2. 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.
3. 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.
4. Drawing. Norwesco's drawing for this tank is linked under Technical Drawing on this page and gives the inlet and outlet heights and the baffle position.

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 tank with the plumbing already installed: the 1250 gallon preplumbed two compartment tank. Another build of the two compartment loose plumbing tank for states not on the list above: the 1250 gallon two compartment tank, 43511. Norwesco's other 1250 gallon low profile tank: the 1250 gallon low profile septic tank. One size up: the 1500 gallon preplumbed one compartment tank. For Florida, the Florida only 1050 gallon two compartment tank.

Shipping and receiving

At 157 inches long the tank is an oversize shipment despite its 417 lb, and it travels on a flatbed or a long trailer from the nearest of five Norwesco plants: Lancaster, Ohio; 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 two people or a machine to take it off the truck. At the tailgate, check 43503 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.