Compared with conventional stone & pipe systems or other alternative and advanced treatment technologies, the Eljen Geotextile Sand Filter (GSF) system offers the largest effective infiltrative surface area in the smallest footprint on the market today. This provides designers the ability to offer a reliable easy to maintain system with long-term performance that their clients require. 

3rd party independent testing data shows that the GSF provides advanced treatment of septic tank effluent to better than secondary levels. These results have allowed the GSF to receive approvals from some states with up to a 60% reduction in the size of the wastewater disposal area as compared to conventional stone and pipe systems.

Benefits of the Eljen GSF System

Ease of Design
The Eljen Geotextile Sand Filter system can be designed to accommodate a wide variety of soil and site conditions. With our state specific design tools, finishing the design of a project is quick and simple.

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.

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. Give your customers the confidence and reliability they require from their septic system. Give them the GSF! 

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.

Cost Savings
With the smallest footprint and superior long-term performance ensures low life cycle cost.

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.

Technical Service
Whether you are in the field or in the office, our team of knowledgeable professionals are ready to support you with any technical, regulatory, and product information that you require.

Training and Education
Eljen offers both classroom training seminars and field demonstrations to ensure proper system installation, operation, and maintenance of the GSF system for you and your customers.