A system using combined treatment and dispersal piping provides a solution for a house on a small creekside lot

Aerated batch reactor saves homeowner thousands; Alternative passive technology replaces a conventional drainfield; Recirculating trickle filter discharges to sensitive waters; Passive biofilter comes ready to install; Robust solution for a coffee shop; ATU resolves a problem on a confined lot; Packed-bed filter replaces a failed sand filter; Aerobic packed-bed bioreactor treats high-strength wastewater

A recirculating gravel filter system with nitrogen reduction and drip dispersal serves a small residential community for a Native American tribe