Orenco’s AdvanTex® Treatment Systems are the ideal solution for environmentally sustainable treatment of residential wastewater flows. Orenco’s AdvanTex AX20 units are a dependable, proven technology for treating residential septic tank effluent to better-than-secondary standards, including nitrogen-reduction. AX20 treatment pods are sturdy, watertight basins filled with lightweight, highly absorbent, engineered textile media that treats a tremendous amount of wastewater in a small space.