To know if you have an electric pump based septic system, you should pay attention to the following:
A visual inspection of your drain field or leach field will indicate if you have a septic mound system or not. A raised mound requires an electric pump to function. Your home inspection paperwork will shed light on whether you have an electric pump based septic system or not. Contact the listing agent. Contact your local county. Most counties keep records of septic systems.