The Eljen Geotextile Sand Filter (GSF) is a passive advanced onsite wastewater treatment system that offers the largest effective infiltrative surface area in the smallest footprint as compared to conventional stone& pipe or other alternative technology systems in the marketplace today. This provides homeowners with a reliable long-term performing septic system that is easy to maintain. The versatility of the GSF makes it ideal for new home construction or as a replacement in the repair for an old septic system.

Benefits of the Eljen GSF System

Longevity and Reliability
The GSF is time proven with over 25 years in the onsite wastewater industry. Our high success rate over other technologies is due to the large infiltrative surface area contained in each GSF module providing you the confidence and reliability you require from a septic system.

Designed for Superior Performance
The unique design of the Eljen GSF reduces the biological soil clogging that occurs in other septic systems by its propriety two-stage Bio-Matt™ pre-treatment process that delivers a better than secondary aerobic effluent to the soil.

Less Site Disruption
Since the GSF occupies a smaller footprint than other technologies, there is less disruption to the site which preserves beautiful and expensive landscaping.

Environmentally Friendly
Go Green! The GSF is made from 96% recycled materials which reduces the amount of material that is sent to landfills. Since the GSF is a passive system, you get advanced treatment of wastewater without the power cost that other technologies have.