Trusted Wastewater Treatment Solutions
Sustainable Wastewater Treatment Solutions You Can Trust
At Eljen Corporation, we are dedicated to delivering reliable and effective onsite wastewater treatment systems. With decades of experience in the industry, we’ve built a reputation for designing innovative, sustainable solutions that protect public health and the environment.
Our systems are engineered to meet stringent local and state regulations while maintaining ease of installation and long-term performance. Whether you’re designing a new septic system or upgrading an existing one, Eljen products provide peace of mind from the ground up.
Explore Our Product Lines
GSF (Geotextile Sand Filter) System
Our flagship GSF system combines advanced filtration with low-profile design. Featuring a proprietary geotextile core and specified sand layer, the GSF system provides a passive, two-stage treatment process for consistent results and long service life.
- Bio-matt management technology
- Advanced Secondary Filtration: Treatment surpasses national testing standards
- Nutrient Removal: Capable of passive Nitrogen removals above the national standard
- Highly configurable in beds, trenches, and mounds
- Full system footprint utilization configurations
- Compact system sizing that outperforms competing products
- Fast and simple installs
- National and International Approvals
- Made in the USA with USA products
- Made from recycled materials
YardFilter™
Designed for flexibility and durability, YardFilter is a compact, modular system that delivers high-quality effluent treatment. It’s ideal for installations with space constraints, varied site conditions, or unique design requirements.
- Installations are quick, saving you on equipment and labor costs
- Factory installed distribution pipe, no drilling or cover fabric required
- Smaller system footprint compared to other technologies
- Less site disruption or damage to landscape
- Made from recycled materials in the USA
- Highly configurable
- Updated due to customer feedback
- Built Stronger and More Robust
- Uses less sand
- Approved in Connecticut
Mantis® Units
Mantis units are engineered with layered filtration media to offer superior treatment and minimal site disruption. Their lightweight design simplifies handling and speeds up the installation process.
- Installations are quick, saving you on equipment and labor costs
- Factory installed distribution pipe, no drilling or cover fabric required
- Smaller system footprint compared to other technologies
- Less site disruption or damage to landscape
- Made from recycled materials in the USA
- Highly configurable
- Approved in Connecticut
Ruck® Systems
For advanced treatment needs, Ruck systems provide enhanced performance in challenging environments. These systems are designed with performance, protection, and simplicity in mind.
Why Choose Eljen?
✅ Proven Performance
Our systems are tested, approved, and installed across the country. With thousands of systems in the ground, Eljen delivers consistent, dependable treatment performance.
✅ Regulatory Compliance
Eljen products are approved for use in multiple states and meet or exceed environmental and public health regulations. We support engineers, designers, and regulators with comprehensive technical resources.
✅ Installer Support
We work closely with certified installers, providing training, design assistance, and product documentation to ensure every system performs as intended.
✅ Designer Support
We work closely with engineers and designers, providing training, design assistance, and product documentation to ensure every system performs as intended. The technical team has expertise in many commercial applications and designs.
✅ Regulator Support
We work hand in hand with local and State regulators to ensure the support network and users are implementing our products in accordance with the local and state regulations.
✅ Made in the USA
All Eljen products are proudly manufactured in the United States. Our commitment to quality control ensures every module meets the highest standards before it leaves our facility.
Who We Serve
Eljen Corporation supports:
- Homeowners looking for dependable, low-maintenance systems
- Installers & Contractors seeking efficient, easy-to-install solutions
- Engineers & Designers needing scalable, flexible design options
- Municipalities & Regulators focused on environmental protection and compliance
Learn. Design. Install.
We believe education and collaboration are key to successful projects. Our training resources, design tools, and technical support ensure you’re equipped for every phase—from permitting final inspection.
Ready to Get Started?
Explore our products, download technical documents, or contact our support team today. Whether you’re working on a single residence or a complex commercial project, Eljen Corporation is here to help.
📞 Call us: 1-800-444-1359
✉️ Email: info@eljen.com
📍 Location: Windsor, CT
🔗 Explore Products | Find a Distributor