TW-Series Septic Tanks

Infiltrator Systems TW-Series Septic Tanks provide superior strength for long-term, water-tight performance. Innovative features not found in any other septic tank include:

  • Thick, triple wall design manufactured with proprietary state-of-the-art rotomolding technology
  • Permanent, factory-installed structural bulkheads
  • Reinforced access ports


No special installation, backfill or water filling procedures are required. the TW-Series Septic Tanks come in six different sizes, from 300-gallon to 1,500-gallon.

Infiltrator TW-Series Septic Tanks are manufactured in the USA with 65% recycled material and are suitable for use as septic tanks or pump tanks. When you stop by our branch, be sure to ask us about this great series of septic tanks by Infiltrator.