The Norwesco 200 gallon plastic septic pump tank is a 56-inch-tall polyethylene basin built to house a submersible effluent or sewage pump and dose your drainfield on demand. At 47 by 47 inches across the base and 56 inches tall, it holds 200 gallons in a compact footprint, molded in black polyethylene to keep light out of the chamber. If you are sizing a pump-and-dose stage, a small lift station, or an effluent holding chamber between your septic tank and the disposal field, this is the basin that does that work.
Will it work for your install?
Run three checks before you order. First, confirm your excavation and access opening clear the outside dimensions: 56 inches high by 47 inches wide by 47 inches long, on a 47.0 x 47.0 footprint. Second, confirm the molded opening passes your pump-and-float assembly. Third, confirm your inlet and discharge heights match your dose plan. All three should be verified against the technical drawing on this page before you commit. Filled with water this 200 gallon tank carries roughly 1,668 pounds, and that figure is the water-filled basin alone, the pump, floats, riser, and discharge piping add to it, so size your set, bedding, and backfill against the loaded basin rather than the dry weight and do not treat 1,668 pounds as the ceiling. The shell is black polyethylene, which blocks light and resists the corrosion that eats concrete and steel basins over time.
Sizing it into the system
This is a pump tank, not a primary septic compartment, so it is meant to receive effluent and hold your pump, floats, and discharge plumbing, all field-installed to suit your layout. If you are still working out dose volume, drawdown, and how a 200 gallon pump tank fits your daily flow, run the numbers with our Tank Sizing Calculator and the Tank Sizing Guide before you set anything. Getting the chamber and dose volume right up front is far cheaper than re-excavating later. For penetration locations and riser opening, match the on-page drawing to your pump and float package.
Approvals and the mistake to avoid
The most common mistake with a septic pump tank is buying it before you confirm it satisfies your authority. Septic basin approval is jurisdiction-specific, and Norwesco's listings vary by region and by code body. Before you buy, check how Norwesco's IAPMO and CSA B66 listings map to your local plumbing and septic code in our guide on Norwesco IAPMO and CSA B66 septic tank approvals, especially if you are installing near the Canadian border where US and Canadian scopes differ. Confirm with your inspector that this 200 gallon basin is accepted for your application before the tank ships.
This Norwesco septic tank ships LTL freight, quoted live to your ZIP from the nearest Norwesco plant. Norwesco molds from Lancaster, OH; Shawnee, OK; St. Bonifacius, MN; and Tooele, UT, so freight is calculated from whichever plant is closest to you. Get your number now with our Freight Cost Estimator, or call 866-418-1777 and we will quote the tank, the freight, and any approval questions before you order.
