Systems and methods for treating wastewater and providing class a sludge

A method of controlling the age of microbial in treating an influent wastewater stream, the method comprising:

• a. in a wastewater treatment system having an influent of wastewater containing pollutants, the wastewater treatment system comprising a first treatment device, a second treatment device and a third treatment device;
• wherein the wastewater flows from the first treatment device to the second treatment device to the third treatment device;
• b. adding a plurality of microbes to the wastewater treatment system at a controlled and predetermined dosing rate;
• the microbes selected to remove the pollutants from the wastewater;
• the plurality of microbes containing from about 103 cfu/ml to 1013 cfu/ml;
• the microbes never being frozen or freeze dried, and having a D50 age of less than 14 days;
• c. wherein the dosing rate maintains the D50 age of the microbes in the wastewater in the wastewater treatment system at less than 20 days old;
• and,
• d. whereby the pollutants in the wastewater are reduced providing an effluent having pollutants as measured by DOD and TSS reduced by at least about 90%.