Address : Wisconsin Ave, #402, Oak Park, IL 60302 | Phone : 773-974-1526 | A normal measured septic framework ought to be checked something like at regular intervals by an expert. Although, it absolutely would not damage to have the tank investigated yearly, since septic assessment expenses are moderately low. Septic tank units are normally siphoned each 3 to 5 years. Regardless, the siphoning calendar will rely upon where you live, if you have tree root systems running close by your funnels or have neighbors with septic issues. Your property measure, inexact measure of wastewater created, and the apparent volume of solids inside the framework are likewise factors that decide the recurrence where you should look for a septic review.