A septic inspection is a necessary procedure, especially for prospective homebuyers who are interested in a particular property and wish to determine if the septic system is working properly. Most septic inspections are done in a non-invasive manner, which means that the inspector does not need to dig up the septic tank and system parts in order to determine that it is working properly. Although septic inspections will vary from company to company, there are a few general steps that many septic inspectors follow in their inspections.