Abstract: A system and method of treating wastewater within a wastewater network, such as a sewer system, to control odor (primarily from sulfides and H2S), FOG (fats, oil, and grease), and corrosion in a distributed wastewater or sewer system. The system and method comprise generating bacteria using an on-site biogenerator, feeding the bacteria into the wastewater, mixing the wastewater and adding oxygen with an aerator/mixer to maintain dissolved oxygen levels of at least 0.5 ppm (if needed), and adding supplemental treatment chemicals (if needed). The system and method preferably comprise monitoring the wastewater and controlling feed rates of bacteria, oxygen and supplemental chemicals based on the results of monitoring.