Single Compartment Septic Tanks
Pre-plumbed AK Industries septic tanks with one chamber, 300 to 1,500 gallons
A single chamber septic tank holds wastewater in one compartment, where solids settle out before the liquid leaves the tank. All of these are IAPMO certified AK Industries tanks with a 20 inch lid on every size, and most come pre-plumbed. Each size from 300 to 1,500 gallons is offered in Standard Duty and Heavy Duty.
Pick the capacity first: the septic tank sizing calculator gives a starting point, and your permit sets the minimum. Then choose the duty rating; the heavy-duty septic tank guide explains when the stronger build makes sense.