Complex sentence: Public Utility Model ("PUM") EMS is an ambulance system in which the community retains public control of the ambulance system's capital assets and accounts receivable through direct, accountable daily oversight.
Split into simpler sentences: Public Utility Model ("PUM"), is an Emergency Medical Service (EMS) system. In the ownership of a Public Utility Model, the community retains control of EMS system capital assets and accounts receivable through daily oversight.