Rates vary by type of service and County the inspection is performed in. Currently three (4) Counties require mandatory well, septic and drain field Inspections. Each County has a different set of rules and regulations. For specific Information on these rules go to: For Barry and Eaton Counties: www.barryeatonhealth.org For Ingham County: www.ingham.org For Shiawassee County: www.shiawassee.net