A 1250 gallon underground tank with the widest state approval list in the family
The Norwesco 1250 gallon multi-use underground liquid storage tank, part number 41753, is a blue polyethylene tank 116 inches long, 55 inches wide and 70 inches tall, weighing 467 lb empty. It serves as a septic tank, a pump or holding tank, or a buried cistern, and this part number is the one to order in most of the country: Norwesco lists state septic approval for forty-two states, from Alabama and Arkansas through Colorado, Connecticut, Delaware, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Mississippi, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin and Wyoming. It comes with a 4 inch adapter and PVC tee assembly at the inlet and at the outlet and a 20 inch gasketed manway. Norwesco lists the tank as IAPMO approved, rates it to 130 F and backs it with a 3 year warranty.
Ready to order, or need it on paper? Get freight to your ZIP and add it to your cart above, request a written quote, or call 866-418-1777 with the permit requirements.
Septic, pump tank or cistern
As a septic tank the house drain enters through the inlet tee, solids settle, and clarified effluent leaves through the outlet tee to the drainfield. As a pump or dosing tank it holds effluent between pump cycles. As a cistern it stores rainwater, hauled water, reclaimed water or a fire reserve; 1250 gallons of water weighs 10425 lb, which is the load the bedding carries when it is full. For a fire reserve, our guide to fire water reservoir design for rural and remote sites covers sizing and freeze protection; for grey water, rainwater or condensate, our note on water reuse tank topology shows where a buried tank sits in the train. If the water is for drinking, tell us before you order and we will confirm the right tank. The state list is Norwesco's statement of where this part number is approved for septic use; the health department still has the final word, so take the drawing and the listing to the permit desk.
Openings, fittings and risers
- Inlet and outlet. A 4 inch adapter with a PVC tee assembly at each end for 4 inch drain pipe. The tees keep floating solids off the outlet and go in before the system is used.
- Manway. A 20 inch gasketed manway with a 20 inch lid, sealed against groundwater and gas.
- Risers to grade. Norwesco's optional risers and extensions, two of each for the two manholes: the N-63514 6 inch extension, N-62397 15 inch extension, N-62396 24 inch extension, N-62395 25 inch riser with 12 inch lid and N-63830 36 inch riser with 6 inch lid. Measure tank top to finished grade before ordering.
- Drawing. Norwesco's drawing for this tank, linked under Technical Drawing on this page, gives the invert heights and manhole positions for laying out the hole.
The same shell for other states, and the sizes either side
Norwesco builds this 1250 gallon tank under other part numbers: the 1250 gallon multi-use tank 41752 with its own state list, and the 1250 gallon multi-use tank 41821 built in California for the Southwest. One size down is the 1000 gallon multi-use underground tank; one size up is the 1500 gallon multi-use underground tank. The tank sizing calculator and tank sizing guide cover sizing by bedrooms and daily flow.
Shipping, receiving and setting
The tank ships LTL from the nearest of Norwesco's plants at Lancaster, Ohio; Owego, New York; Tooele, Utah; or Washougal, Washington, 116 by 55 by 70 inches on the truck at 467 lb. The listed price is before freight; the freight cost estimator gives the lane cost to your ZIP. At the tailgate, check 41753 on the bill of lading against the moulded number, look at both tee assemblies and the manway gasket, and walk the shell for transit cracks before you sign. Set it on the bedding in Norwesco's installation instructions, fill it with water as you backfill so the walls stay round, and keep vehicles off the ground above it.
Questions before you order? Call 866-418-1777.
Freight and documents
Ships from: Owego, NY; Lancaster, OH; Tooele, UT; Washougal, WA. 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 41753.
See this tank
Interactive 3D model with live fill. This tank has an interactive 3D model built to its manufacturer dimensions. Rotate it, and set a fill level to see how much liquid it holds at any height. Open the 3D view on the product photo above. Download the 3D model (GLB).
Product video. Watch the Norwesco 1250 Gallon Plastic Multi-Use Underground Liquid Storage Tank video (71 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.
