Infiltrator Septic Tanks

Infiltrator Systems Inc. manufactures a line of plastic leach field chambers septic tanks. This line is called the TW-Series Septic Tank and is available in six different sizes. Infiltrator Systems Inc. also manufactures septic tank accessories through their other product lines EZflow, EZset, and Aquaworx.

Company History

Infiltrator Systems Inc. has been manufacturing septic tanks since 1987. The worldwide company has nearly 400 employees. Infiltrator developed the plastic leachfield chamber to replace the stone and pipe leachfields and create an environmental friendly solution to water management. Infiltrator's systems are approved in the United States and Canada; the company has installed more than 1.8 million systems and they have more than 100 million chambers in-ground world-wide.

Special Features

The TW Series Septic Tanks are designed with several special features that differentiate them from concrete septic tanks. Infiltrator states these tanks are built with innovative technology - making them easy to use, strong, and flexible. Additional features of the The TW Series Septic Tanks include:

  • Triple walls that act like a structural l-beam
  • Proprietary rotomolding process
  • Factory installed bulk-heads
  • Can be installed with 6 to 48 inches of cover
  • Reinforced access ports
  • Can be pumped dry during pump-outs
  • Resistant to flotation
  • Can be used as septic and pump tanks
  • Flat bottom for easy storage and installation
  • No special installation, backfill or water filling required


TW Series Septic Tanks come with a five-year limited warranty that covers defective materials and workmanship for up to five years after installation.

Contacting Infiltrator Systems

Infiltrator Systems Inc.
6 Business Park Road
P.O. Box 768
Old Saybrook, CT 06475

Phone: 800-221-4436
Fax: 860-577-7001