Eljen Systems

Eljen Septic Systems & Wastewater Treatment Products

Smarter Septic Solutions Start With Eljen

Eljen delivers proven, reliable wastewater treatment technology designed to keep your system performing at its best. Offering advanced drain field solutions for your tough jobsites across the State of Idaho. Eljen products offer a cleaner, more efficient alternative to traditional systems — without the maintenance headaches.

Why Choose Eljen?

Engineered Efficiency

Eljen technology increases native soil infiltration and enhances system longevity through layered filtration and advanced flow management.

Compact Footprint

Ideal for challenging sites, tight lots, and areas where conventional systems simply won't fit.

Fast, Simple Installation

Lightweight components and straightforward layouts make installation quicker and more cost-effective for contractors and homeowners alike.

Environmental Protection

Designed to reduce bio mat buildup, protect groundwater, and support long-term system performance. Additionally, the units are comprised of recycled materials.

Idaho Approved Eljen Solutions

✔ A42 Geotextile Sand Filter – A versatile, widely approved system built for consistent performance in varied soil conditions.

Perfect for:

Residential septic upgrades
New construction
Shallow soils where groundwater or other limiting layers are present
Tight-lot installations
Property owners seeking long-term reliability
Contractors needing a dependable treatment solution
Commercial sized systems

Get Expert Support for Systems in Idaho

Whether you're a homeowner, builder, or installer, our team is here to help you size & design the right Eljen system for your site.

Contact R.C. Worst & Co. today for specs, pricing, or design assistance for all Eljen Systems in Idaho!

Our Projects

Links

Idaho Design and Install Manual

Idaho Design Program

GSF-A42 Spec Sheet

GSF Cut Sheet

GSF Product Overview Brochure

Generic Homeowners Manual

Idaho Installer Training Video

Buy an Eljen System today!

FAQ Questions

Q: What is an Eljen GSF Geotextile Sand Filter system?

A: In Idaho, Eljen is categorized as a proprietary wastewater treatment product.

Q: How does an Eljen GSF system work?

A: Eljen is a passive drain field product that keeps the treatment aspect of the system strictly to the drain field.

Q: When is an Eljen GSF system required instead of a traditional septic system?

A: Eljen is a great option when the effective soil depth to groundwater or other limiting layers are shallow. In Idaho, Eljen meets the criteria for NSF40 treatment standards as well. This means it can be used in a number of different scenarios where a treatment system may be required.

Q: Is the Eljen GSF system approved in my state?

A: Eljen is approved in Idaho!

Q: How long does an Eljen GSF system last?

A: There isn't a right answer here due to the number of variables. Although with regular effluent filter cleaning, regular recommended tank maintenance, proper sizing, & proper installation, systems could last 20-30 years or possibly even more than 50 years.

Q: How much space does an Eljen GSF system need?

A: In Idaho, Eljen falls under the proprietary treatment category, which with an adjusted loading rate, can shrink the footprint of the overall system. However, the size of each system is heavily dependent on the soil type, the site conditions, and the conditions of service (In Idaho, typically GPD).

Q: Can a homeowner install an Eljen GSF system themselves?

A: In Idaho, Eljen requires a complex installers license & necessary training to install.

Q: What type of maintenance does an Eljen GSF system require?

A: Minimal Maintenance, as it is passively treated through the drain field product. However, standard maintenance such as cleaning your effluent filter regularly & getting your tank(s) pumped every 3-6 years are necessary to keep the drain field functioning for a long time.

Q: Where can I buy Eljen GSF systems and components?

A: In Idaho, you can contact us at R.C. Worst & Co. to help size & estimate materials for all residential & commercial applications. If you are in another state, head over to Eljen.com and find your state's supplier today!