Chem-Tainer 1000 Gallon Plastic One Compartment Septic Tank

The Chem-Tainer 1000 Gallon One Compartment Septic Tank is a single-chamber polyethylene septic tank measuring 96 inches long, 58 inches wide, and 62 inches tall. All 1,000 gallons sit in one undivided compartment, which makes this 1000 gallon tank a common pick for single-tank septic installs and any septic job where local code allows a one-compartment vessel rather than a divided unit.

Will it work for your install

Because this is a one-compartment design, the full 1,000 gallons sits in a single chamber. Plan the excavation around the listed 58 x 96 inch base and 62-inch height, and add working clearance on every side so your crew can set, plumb, and backfill the tank without crowding the hole — the dig is always larger than the 58 x 96 footprint itself. The polyethylene shell is light to handle empty compared with concrete, but it carries real weight once filled: at capacity it holds roughly 8,340 pounds of water (water at full volume, not the tank's shipping weight). Size the bedding and excavated bed to support a loaded tank, not just the empty shell. Confirm inlet and outlet locations, lid, and any riser requirements against your site plan and the technical drawing on this page before you dig. If you are still deciding whether 1,000 gallons matches your daily flow, run the numbers with our Tank Sizing Calculator and Tank Sizing Guide.

Approvals and codes — confirm before you buy

Septic approval is the single biggest mistake to avoid on a tank like this. State and county septic codes vary widely on whether they accept a plastic one-compartment tank, what burial depth and anti-flotation measures they require, and whether they instead demand a divided two-compartment design. This unit is a one-compartment tank, so if your health department requires two compartments, confirm that before ordering rather than after the tank arrives. Verify your local requirements first, and read our guide on IAPMO and CSA B66 septic tank approvals and cross-border scope to see how plumbing-code listings map to what your jurisdiction will sign off on. If you are weighing plastic septic options across brands, our manufacturer comparison guide walks through the tradeoffs.

Lead time and planning

A 1,000 gallon septic tank is a planned purchase, not a same-day pickup. Build excavation and inspection scheduling around realistic delivery windows so your crew, your inspector, and the truck line up. Our tank procurement lead time guide covers the logistics drivers worth planning around before you commit a dig date.

This septic tank ships LTL freight, quoted live to your ZIP code from the nearest stocking plant — listed for this unit as Keaau, HI. Freight is never included in the list price, so get an exact number with our Freight Cost Estimator, or call 866-418-1777 and we will quote it for you and confirm any one-compartment septic approval questions before you order.