Pirana Septic System Review: Can It Revive a Failing Leach Field?
A few years ago, I encountered a non-traditional septic system in Passaic County, New Jersey. The system was installed in a high-groundwater area—a stream ran along the property line—and the backyard was small. It was a mounded septic system with:
One settling tank A pump dosing tank A small pressure leach field A Unique Addition: The Pirana System What made this setup unique was the installation of a Pirana System, a submerged attached growth bioreactor (SAGB).
Posted by Thomas N. Ott, PE on Monday, March 17, 2025