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IM-Series Potable Water Tank

IM-Series Potable Water Tank
IM-Series Potable Water Tank Logo

The Infiltrator IM-Series Potable water tanks are lightweight, strong and durable. These potable, watertight tank designs are offered with Infiltrator’s potable heavy-duty lids. Infiltrator injection-molded tanks provide a revolutionary improvement in plastic tank design, offering long-term exceptional strength and watertightness.

Do not install the tank in vehicular traffic areas. The tank is designed for non-traffic applications.

Infiltrator’s IM-Series Potable water tanks are available in 552-gallon, 1287-gallon and 1787-gallon capacities.

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  IM-550C IM-1280C IM-1760C
Size 62"W x 65"L x 55"H
(1575 mm x 1651 mm x 1397 mm)
62"W x 127"L x 55"H
(1575 mm x 3226 mm x 1397 mm)
62"W x 176"L x 55"H
(1575 mm x 4460 mm x 1397 mm)
Total Capacity 552 gal (2089 L) 1287 gal (4872 L) 1787 gal (6765 L)
Fiberglass Supports 0 2 4
Weight 191 lbs (87 kg) 346 lbs (157 kg) 501 (227 kg)


  • Strong injection molded polypropylene construction
  • NSF/ANSI-61-certified for potable uses
  • Lightweight plastic construction and inboard lifting lugs allow for easy delivery and handling
  • Integral heavy-duty green lids that interconnect with EZsnap risers and pipe riser solutions
  • Structurally reinforced access ports eliminate distortion during installation and pump-outs
  • Reinforced structural ribbing and fiberglass bulkheads offer additional strength
  • Can be installed with 6" to 48" of cover
  • Can be pumped dry
  • Suitable for use as a potable tank, rainwater harvesting tank, or water storage tank
  • No special water filling requirements are necessary
  • The tank may be backfilled with suitable native soil. See installation instructions for guidance.

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Many installation requirements and options are governed by local codes instituted by the health department in your area. When in question, check with the local health department for specifics and follow their code instructions. Any design or installation questions not answered here can be directed to the Infiltrator Water Technologies’ Technical Services staff by calling 1-800-718-2754.

All Infiltrator tanks are certified by IAPMO and CSA the most recognized certification agencies for tank technology. Please check with your local health department prior to use to be sure.

No, IM-series tanks can only be assembled by those who have been trained and authorized by Infiltrator Water Technologies to assemble IM-tanks.

No, Infiltrator tanks can be installed using suitable native soil.


Infiltrator’s tank installation instructions outline when buoyancy control measures are required and are available on this website. If buoyancy control measures are determined to be necessary, the Infiltrator IM Series Septic Tank Buoyancy Control Guidance document is also available on this website and provide specific design options for anti-floatation measures.

Infiltrator tanks can be installed with a minimum of 6" and a maximum of 48" of cover.

Infiltrator’s riser guidance document and a video are available on this website to provide specific design options for attaching a variety of commercially available risers manufactured by Infiltrator Water Technologies.

No, the structural bulkhead system is an integral part of the tank and cannot be modified or removed.