Envirogen Wins $1.7MM Kalamazoo Biological Foul Air Mitigation Treatment System

July 20, 2021 – Envirogen has been awarded the contract for a new Build-In-Place (BIP) biofiltration system.  The $1.7MM contract will treat the air flowing through the city’s sewer systems to remove odorous compounds and address resident complaints of smells of rotten cabbage and rotten eggs.

Read the official announcement made by the City here.