The First - The Original!

Eljen GSF

Geotextile Sand Filter System

Learn More

Mantis M5

The High Performance

Wastewater System

Learn More

Mantis 536-8

Connecticut's Premier

Wastewater System

Learn More

Eljen Corporation

GSF & Mantis

Homeowner's Information

Learn More

About Eljen

Established in 1970, Eljen Corporation created the world’s first prefabricated drainage system for foundation drainage and erosion control applications. In the mid-1980s, we introduced our Geotextile Sand Filter products for the passive advanced treatment of onsite wastewater in both residential and commercial applications. Today, Eljen is a global leader in providing innovative products and solutions for protecting our environment and public health. 

Learn More ›

Recent News

May 03, 2016

A failed septic system in Pennsylvania with a shallow limiting zone repaired with Eljen GSF
Read More »

April 05, 2016

Residential systems installed simultaneously on lakefront sites in British Columbia
Read More »

View All News›

Contact Eljen