Geotextile Sand Filter

Made by: Eljen Corporation

Made in: Windsor

Designed for: Residential and commercial wastewater treatment applications

By the Numbers: 225,000 units produced annually

Manufactured in Windsor since 1982, the Eljen Geotextile Sand Filter is an advanced wastewater treatment system that uses natural biological processes and gravity flow rather than electricity or chemicals.

Developed from research rooted at the University of Connecticut, its patented Bio-Matt process treats effluent twice before it reaches the soil, improving water quality, reducing environmental impact, and often requiring less land than traditional septic systems. 

With more than 40 years of proven performance and tens of thousands of installations, the Eljen GSF is Connecticut ingenuity at its best.