GSI Geo-Synthetics Systems LLC Email Format

Environmental ServicesWisconsin, United States51-200 Employees

When it comes to environmental containment, GSI does it all. For over 40 years, Geo-Synthetics Systems LLC has built a legacy as one of the nation’s most trusted names in geosynthetic distribution, fabrication, and installation. Serving industries from power and solid waste to mining and agriculture, we specialize in geosynthetic solutions that support erosion control, contamination cleanup, and complex containment challenges.
Sourcing and managing multiple vendors can stall critical environmental projects. That’s why GSI offers a streamlined approach—acting as your all-in-one partner to plan, estimate, supply, and install tailored containment systems. As one of the largest independent liner installers in the country, we offer both the best-in-class products and the deep industry know-how to back them up.
What sets us apart? GSI is one of the country’s largest independent installers of liners for landfill sites, and manages installation projects in all parts of the country.  In addition, with its GEOSTRUX™ geotextile tubes, GSI has supported sediment clean-up projects on waterways throughout the United States.  GSI is an authorized distributor for many of the most recognized names of geosynthetic materials and erosion control products.  GSI delivers responsive, reliable solutions designed around your project’s specific needs—with a professional team committed to getting it right.

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