Passive Advanced Treatment Technology

  • Tested and Certifed by NSF to NSF Standard 40
  • Independent and third party testing shows the Eljen GSF treats to better than secondary treatment
  • Pretreats effluent with a two-stage Bio-Matt™ process
  • Greater long-term performance
  • Requires a much smaller installation area than traditional systems
  • Patented products and technology
  • No stone required
  • Lower site impact
  • Lightweight and easy to handle and install

When your installation requires extra capacity in less space, the Eljen GSF delivers. While conventional systems rely on a single biomat forming at the soil interface, the Eljen GSF adds a second, primary biomat layer on the surface of it’s unique Bio-Matt™ Fabric.


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