Double Compartment Septic Tanks
Dual chamber AK Industries tanks, pre-plumbed, from 1,000 to 1,500 gallons
In a two compartment septic tank, an inner wall splits the tank so wastewater settles in the first chamber before the clearer liquid passes to the second. Every tank here is from AK Industries, pre-plumbed, IAPMO certified and fitted with two 20 inch lids, in 1,000, 1,050, 1,300 and 1,500 gallon sizes.
Each size comes in a Standard Duty and a Heavy Duty version, so decide capacity first, then duty. How a septic system works shows where the tank fits, and single compartment septic tanks include smaller sizes if one chamber meets your code.