Northern Illinois Septic Service is founded on integrity. We believe you & your family deserves the highest quality, dependable maintenance that can be provided. Northern Illinois Septic Service is certified to monitor your wastewater system as required by the Illinois Department of Public Health, Lake, Kane, & Will County Helath Departments. We provide service in the following Northern Illinois Counties: Lake, Kane, DuPage, Dekalb, McHenry, Will, Kendall, Cook, Boone, & Winnebago. WE SERVICE THE FOLLOWING AEROBIC TREATMENT PLANTS: AQUAKLEAR, AQUASAFE, AQUAROBIC, CAVIETTE, CLEARSTREAM, HYDRO-ACTION, JET, MULTI-FLO, NAYADIC, NORWECO, SYBR-AER, & WHITEWATER We offer a choice of 1 year, 2 year, & 3 year service/maintenance contracts. We also offer aerator replacement.