Did You Know

First Supply carries Eljen GSF (Geotextile Sand Filters) that are a great solution for septic drain fields on small and difficult properties?


Passive Advanced Treatment Technology

The Eljen GSF (Geotextile Sand Filter) is an alternative for onsite septic leachfield systems. Independent and third party testing is used to assess and confirm the GSF’s performance under a variety of conditions.

  • Treatment and disposal in the same footprint
  • Flexible site installation
  • Reduced site impact
  • Lightweight and easy to handle

How the Eljen GSF System Works

Each GSF Module is made up of a geotextile fabric and a plastic core material that work together to provide vertical surface area and oxygen transfer. The GSF System applies treated effluent to the soil, increasing the soil’s long-term acceptance rate. A Specified Sand layer provides additional filtration, and prevents saturated conditions.

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Contact your local First Supply for more information on the Eljen GSF.