The system processes the wastewater from a small winery located in the industrial area through a series of settling, aeration and pump-out chambers before it is discharged to sewer. The pH of the wastewater is continually monitored and plant operators are alerted at the control panel should the pH move outside the permitted range. The system incorporates a multi-chamber treatment tank installed below-ground, an aeration system including blower and diffusers, a discharge pump with flow meter, and pH monitoring system.