Peabody Engineering offers a complete line of Polyethylene below ground tanks for septic and potable water storage. The rotational molding process we use allows for a one-piece, seamless tank that is rugged and impact resistant. Our tanks are manufactured to strict quality guidelines to ensure years of high-performance use.

Polyethylene Septic Tanks - Backed by a three-year warranty and approved by state and local health departments from coast to coast, these tanks are rugged yet lightweight and easy to install. Where applicable, we offer tanks approved by IAPMO and CSA. Our septic tanks offer excellent chemical resistance, won't rust, corrode or deteriorate from gases or chemicals present in sewage or in the soil. Offered in either single or double compartment, pre-plumbed and ready for installation, these tanks are your best choice for new construction or replacement of an old septic system.

We also offer a 300-gallon and a 500-gallon spherical container that may be used as a pump tank, which means that they can be either full or empty, unlike our standard ribbed septic tanks. Both sizes are equipped with a molded-in elevated pump stand in the bottom of the tank interior.

Below Ground Polyethylene Water Storage Tanks - Campgrounds, resorts, residential or vacation homes, construction sites or industrial - we have a tank to meet your water storage needs. These tanks are ideal for applications when drinking water must be hauled in or if a well does not meet the consumption needs. Our Cistern tanks are made from resins that meet FDA specifications to ensure the safe storage of potable water and are available in capacities up to 2500 gallons. The tanks will not impart a taste or odor to your water and have been certified under ANSI/NSF standard 61.

For assistance in ordering, call our customer service department at (877) 734-3759.
Shop our septic and below ground cistern tanks.